Communication configuration for high pathloss operations

ABSTRACT

Methods, systems, and devices for wireless communications are described that provide for the management of different operation modes in wireless systems. For example, wireless device(s) may operate in a high pathloss operation mode or a normal pathloss operation mode based on the pathloss experienced between the transmitting and receiving devices. In some cases, a first wireless device may transmit a message to a second wireless device to configure a bandwidth part (BWP) for high pathloss mode communications. The message may be transmitted via control signaling and after receipt of the message, the second wireless device may enter a high pathloss mode for communications with the first wireless device (e.g., after a given time duration). Some parameters may be configurable (e.g., transmission duration, coding scheme) between high pathloss mode and normal pathloss mode, while other parameters may remain the same (e.g., processing time, switching time).

CROSS REFERENCE

The present application for patent is a Continuation of U.S. patentapplication Ser. No. 16/806,738 by LI et al., entitled “COMMUNICATIONCONFIGURATION FOR HIGH PATHLOSS OPERATIONS” filed Mar. 2, 2020, whichclaims the benefit of U.S. Provisional Patent Application No. 62/835,420by LI et al., entitled “COMMUNICATION CONFIGURATION FOR HIGH PATHLOSSOPERATIONS,” filed Apr. 17, 2019, each of which is assigned to theassignee hereof and expressly incorporated by reference in theirentirety herein.

INTRODUCTION

The following relates to wireless communications, and more specificallyto communication configurations for wireless systems.

Wireless communications systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be capable ofsupporting communication with multiple users by sharing the availablesystem resources (e.g., time, frequency, and power). Examples of suchmultiple-access systems include fourth generation (4G) systems such asLong Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, orLTE-A Pro systems, and fifth generation (5G) systems which may bereferred to as New Radio (NR) systems. These systems may employtechnologies such as code division multiple access (CDMA), time divisionmultiple access (TDMA), frequency division multiple access (FDMA),orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonalfrequency division multiplexing (DFT-S-OFDM). A wireless multiple accesscommunications system may include a number of base stations or networkaccess nodes, each simultaneously supporting communication for multiplecommunication devices, which may be otherwise known as user equipment(UE).

SUMMARY

A method of wireless communications at a first wireless device isdescribed. The method may include determining a communicationconfiguration for a second wireless device, the communicationconfiguration indicating one or more configuration parameters for abandwidth part (BWP), a length of a synchronization signal block (SSB),or a combination thereof, associated with a first mode, transmitting anindication of the communication configuration to the second wirelessdevice for operating in the first mode, where a first length of a firsttransmission time interval (TTI) associated with the first mode isdifferent from a second length of a second TTI associated with a secondmode, and communicating with the second wireless device operating in thefirst pathloss mode based on the one or more configuration parameters.

An apparatus for wireless communications at a first wireless device isdescribed. The apparatus may include a processor and memory coupled tothe processor. The processor and memory configured to cause theapparatus to determine a communication configuration for a secondwireless device, the communication configuration indicating one or moreconfiguration parameters for a BWP, an SSB, or a combination thereof,associated with a first mode, transmit an indication of thecommunication configuration to the second wireless device for operatingin the first mode, where a first length of a first TTI associated withthe first mode is different from a second length of a second TTIassociated with a second mode, and communicate with the second wirelessdevice operating in the first mode based on the one or moreconfiguration parameters.

Another apparatus for wireless communications at a first wireless deviceis described. The apparatus may include means for determining acommunication configuration for a second wireless device, thecommunication configuration determining one or more configurationparameters for a BWP, an SSB, or a combination thereof, associated witha first mode, transmitting an indication of the communicationconfiguration to the second wireless device for operating in the firstmode, where a first length of a first TTI associated with the first modeis different from a second length of a second TTI associated with asecond mode, and communicating with the second wireless device operatingin the first mode based on the one or more configuration parameters.

A non-transitory computer-readable medium storing code for wirelesscommunications at a first wireless device is described. The code mayinclude instructions executable by a processor to identify acommunication configuration for a second wireless device, thecommunication configuration indicating one or more configurationparameters for a BWP, an SSB, or a combination thereof, associated witha first mode, transmit an indication of the communication configurationto the second wireless device for operating in the first mode, where afirst length of a first TTI associated with the first mode is differentfrom a second length of a second TTI associated with a second mode, andcommunicate with the second wireless device operating in the firstpathloss mode based on the one or more configuration parameters.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for operating in the firstmode for communications with the second wireless device, andtransmitting the indication of the communication configuration to thesecond wireless device for the second wireless device to communicate viathe BWP, SSB, or the combination based on operating in the first mode.In some cases, the first mode may be a first pathloss mode.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for communicating with thesecond wireless device via the BWP, the SSB, or the combination after atime duration indicated by the communication configuration.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for transmitting aninformation element (IE) for the BWP, the SSB, or the combination in theone or more configuration parameters, the IE indicating that the BWP,the SSB, or the combination may be configured for the first mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the one or more configurationparameters includes at least one of control resource set information,channel state information (CSI) resources, sounding reference signal(SRS) resources, a TTI duration, tracking reference signal (TRS)information, or any combination thereof associated with the BWP, theSSB, or the combination.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the IE includes a single bitfield.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, at least a portion of the oneor more configuration parameters may be the same as one or moreconfiguration parameters for a second BWP, a second SSB, or acombination thereof, associated with the second mode. In some cases, thesecond mode may be a second pathloss mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, a processing time parameter,a transmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters may be the same as acorresponding parameter of the one or more configuration parameters forthe second BWP, the second SSB, or the combination.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for transmitting theindication of the communication configuration via radio resource control(RRC) signaling or downlink control information (DCI).

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for configuring the BWP forthe second wireless device for communications in the first mode, the BWPincluding one of a downlink BWP or an uplink BWP, where the operationparameter may be for the BWP.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for configuring a secondBWP, a second SSB, or a combination for the second wireless device forcommunications in the second mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first wireless device andthe second wireless device may be integrated access and backhaul (IAB)nodes operating in an IAB network.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first mode may be a highpathloss mode and the second mode may be a normal mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first length of the firstTTI associated with the first pathloss mode may be longer than thesecond length of the second TTI associated with the second mode.

A method of wireless communications at a first wireless device isdescribed. The method may include receiving, from a second wirelessdevice, an indication of a communication configuration for operating ina first mode, the communication configuration indicating one or moreconfiguration parameters for a BWP, an SSB, or a combination thereof,associated with the first mode and communicating with the secondwireless device in the first mode based on the one or more configurationparameters, where a first length of a first TTI associated with thefirst mode is different from a second length of a second TTI associatedwith a second mode.

An apparatus for wireless communications at a first wireless device isdescribed. The apparatus may include a processor and memory coupled tothe processor. The processor and memory may be configured to cause theapparatus to receive, from a second wireless device, an indication of acommunication configuration for operating in a first mode, thecommunication configuration indicating one or more configurationparameters for a BWP, an SSB, or a combination thereof, associated withthe first mode and communicate with the second wireless device in thefirst mode based on the one or more configuration parameters, where afirst length of a first TTI associated with the first mode is differentfrom a second length of a second TTI associated with a second mode.

Another apparatus for wireless communications at a first wireless deviceis described. The apparatus may include means for receiving, from asecond wireless device, an indication of a communication configurationfor operating in a first mode, the communication configurationindicating one or more configuration parameters for a BWP, an SSB, or acombination thereof, associated with the first mode and communicatingwith the second wireless device in the first mode based on the one ormore configuration parameters, where a first length of a first TTIassociated with the first mode is different from a second length of asecond TTI associated with a second mode.

A non-transitory computer-readable medium storing code for wirelesscommunications at a first wireless device is described. The code mayinclude instructions executable by a processor to receive, from a secondwireless device, an indication of a communication configuration foroperating in a first mode, the communication configuration indicatingone or more configuration parameters for a BWP, an SSB, or a combinationthereof, associated with the first mode and communicate with the secondwireless device in the first mode based on the one or more configurationparameters, where a first length of a first TTI associated with thefirst pathloss mode is different from a second length of a second TTIassociated with a second mode.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for receiving theindication of the communication configuration to communicate based onthe first wireless device operating in the first mode.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for communicating after atime duration indicated by the communication configuration.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for identifying an IEassociated with the BWP, the SSB, or the combination in the one or moreconfiguration parameters, the IE indicating that the BWP, the SSB, orthe combination may be configured for the first mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the one or more configurationparameters includes at least one of control resource set information,CSI resources, SRS resources, a TTI duration, TRS information, or anycombination thereof associated with the BWP, the SSB, or thecombination.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the IE includes a single bitfield.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, at least one of the one ormore configuration parameters may be the same as one or moreconfiguration parameters for a second BWP, a second SSB, or acombination associated with the second mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, a processing time parameter,a transmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters may be the same as acorresponding parameter of one or more configuration parameters for thesecond BWP, the second SSB, or the combination.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for receiving theindication of the communication configuration via RRC signaling or DCI.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for configuring the BWP forthe first wireless device for communications in the first mode, the BWPincluding one of a downlink BWP or an uplink BWP, where theconfiguration parameters are for a BWP.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for configuring a secondBWP, a second SSB, or a combination for the first wireless device forcommunications in the second mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first wireless device andthe second wireless device may be IAB nodes operating in an IAB network.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first mode may be a highpathloss mode and the second mode may be a normal mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first length of the firstTTI associated with the first mode may be longer than the second lengthof the second TTI associated with the second mode.

A method of wireless communications at a first wireless device isdescribed. The method may include determining a communicationconfiguration for a second wireless device, the communicationconfiguration including one or more configuration parameters for a BWP,an SSB, or a combination thereof, associated with a first mode andcommunicating with the second wireless device according to the firstmode based on the one or more configuration parameters, where a firstlength of a first TTI associated with the first mode is different from asecond length of a second TTI associated with a second mode.

An apparatus for wireless communications at a first wireless device isdescribed. The apparatus may include a processor and memory coupled tothe processor. The memory and processor further configured to cause theapparatus to determine a communication configuration for a secondwireless device, the communication configuration including one or moreconfiguration parameters for a BWP, an SSB, or a combination thereof,associated with a first mode and communicate with the second wirelessdevice according to the first mode based on the one or moreconfiguration parameters, where a first length of a first TTI associatedwith the first pathloss mode is different from a second length of asecond TTI associated with a second mode.

Another apparatus for wireless communications at a first wireless deviceis described. The apparatus may include means for determining acommunication configuration for a second wireless device, thecommunication configuration including one or more configurationparameters for a BWP, an SSB, or a combination thereof, associated witha first mode and communicating with the second wireless device accordingto the first mode based on the one or more configuration parameters,where a first length of a first TTI associated with the first mode isdifferent from a second length of a second TTI associated with a secondmode.

A non-transitory computer-readable medium storing code for wirelesscommunications at a first wireless device is described. The code mayinclude instructions executable by a processor to identify acommunication configuration for a second wireless device, thecommunication configuration including one or more configurationparameters for a BWP, an SSB, or a combination thereof, associated witha first mode and communicate with the second wireless device accordingto the first mode based on the one or more configuration parameters,where a first length of a first TTI associated with the first mode isdifferent from a second length of a second TTI associated with a secondmode.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for entering the first modefor communications with the second wireless device, and communicatingwith the second wireless device after a time duration after entering thefirst mode. In some cases, the first mode may be a first pathloss mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the one or more configurationparameters include at least one of control resource set information, CSIresources, SRS resources, a TTI duration, TRS information, or anycombination thereof associated with the BWP, the SSB, or thecombination.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, at least one of the one ormore configuration parameters may be the same as one or moreconfiguration parameters for a second BWP, a second SSB, or acombination associated with the second mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, a processing time parameter,a transmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters may be the same as acorresponding parameter of the one or more configuration parameters forthe second BWP, the second SSB, or the combination.

Some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein may further includeoperations, features, means, or instructions for configuring the BWP,the SSB, or the combination for the second wireless device forcommunications in the first mode based on the one or more configurationparameters for the BWP, the SSB, or the combination, and configuring thesecond BWP, the SSB, or the combination for the second wireless devicefor communications in the second mode based on the one or moreconfiguration parameters for the second BWP, the SSB, or thecombination.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first wireless device andthe second wireless device may be IAB nodes operating in an IAB network.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first mode may be a highpathloss mode and the second mode may be a normal mode.

In some examples of the method, apparatuses, and non-transitorycomputer-readable medium described herein, the first length of the firstTTI associated with the first pathloss mode may be longer than thesecond length of the second TTI associated with the second mode.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 through 3 illustrate examples of a wireless communicationssystem that supports communication configuration for high pathlossoperations in accordance with one or more aspects of the presentdisclosure.

FIG. 4 illustrates example configuration parameters that supportcommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure.

FIG. 5 illustrates example timing diagrams that support communicationconfiguration for high pathloss operations in accordance with one ormore aspects of the present disclosure.

FIG. 6 illustrates an example of a process flow that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure.

FIGS. 7 and 8 show block diagrams of devices that support communicationconfiguration for high pathloss operations in accordance with one ormore aspects of the present disclosure.

FIG. 9 shows a block diagram of a pathloss mode manager that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure.

FIG. 10 shows a diagram of a system including a UE that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure.

FIG. 11 shows a diagram of a system including a base station thatsupports communication configuration for high pathloss operations inaccordance with one or more aspects of the present disclosure.

FIGS. 12 through 18 show flowcharts illustrating methods that supportcommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure.

DETAILED DESCRIPTION

Some wireless communications systems may include access nodes tofacilitate wireless communications between a user equipment (UE) and anetwork. Such deployments may use beamformed transmissions in millimeterwave (mmW) frequency ranges for communications between different nodes,which may include access or backhaul communications. For instance, aparent node (which may also be referred to as a donor node, an anchornode, or other like terminology) may have a high-capacity, wired,backhaul connection (e.g., fiber) to the core network. The parent nodemay also communicate (e.g., using directional beams) with one or moreother nodes (e.g., relay nodes or devices) or UEs that may be referredto as child nodes. As such, wireless communications between the parentnode and other devices may include backhaul communications, accesscommunications, or a combination thereof. Such systems may be referredto as an integrated access and backhaul (IAB) network.

Wireless communication systems such as an IAB network may operate in mmWfrequency ranges, e.g., 28 gigahertz (GHz), 40 GHz, 60 GHz, etc.Wireless communications at these frequencies may be associated withincreased signal attenuation (e.g., pathloss), which may be influencedby various factors, such as temperature, barometric pressure,diffraction, blockage, etc. As a result, signal processing techniques,such as beamforming, may be used to coherently combine energy andovercome the pathlosses at these frequencies. Due to the increasedpathloss in mmW communication systems, transmissions from the basestation or the UE may be beamformed. Moreover, a receiving device mayuse beamforming techniques to configure antenna(s) or antenna array(s)such that transmissions are received in a directional manner. In somecases, the pathloss over a channel may become excessive and a highpathloss mode may be enabled such that the transmissions duration ofsignals, control and data channels is increased. For instance, the highpathloss mode may utilize relatively longer TTIs for certain channels,such as a physical uplink shared channel (PUSCH) and physical downlinkshared channel (PDSCH), to attempt to overcome the pathloss experiencedon the channel. In some cases, the transmission time intervals (TTIs) ofa PDSCH or a PUSCH may have a duration on the order of multiple TTIs(e.g., multiple slots or 10 ms). This duration may be determined basedon a balance between a physical downlink control channel (PDCCH)occupying the length of a slot while keeping the overhead of PDCCH frombecoming too high.

In cases where pathloss exceeds the threshold or is outside the givenrange, some networks may be unable to support communications.Additionally, certain deployment scenarios may experience excessivepathloss (e.g., such as in a mmW network) that exceeds the ability ofsome techniques (e.g., beamforming) to accommodate larger variations inpathloss. For instance, some techniques may not be capable of supportingwireless communications between devices (e.g., nodes in an IAB network)when the pathloss value between the communicating devices satisfies orotherwise exceeds a threshold pathloss value. In such cases, devices maybe capable of operating in multiple modes, such as a normal mode and ahigh pathloss mode, where the high pathloss mode may operate in a narrowbandwidth to accommodate the pathloss experienced between thetransmitter and receiver. In a narrower band, the transmitter mayconcentrate its power on fewer resources to overcome pathloss, and thereceiver may simplify its channel estimation while maintainingsufficient performance to support communications.

Techniques for managing communications for devices switching betweenhigh pathloss mode and normal mode are described. Devices used mayinclude a node within and IAB network. A first device (e.g., a parentdevice, IAB node), upon entering a high pathloss mode may message asecond device (e.g., a child device) to activate a high pathlosscommunication configuration for communicating with the parent device.The high pathloss communication configuration may indicate to the childdevice to enable a configuration for a high pathloss bandwidth part(BWP). The indication may be sent from the parent to the UE after acertain time after the parent has entered high pathloss mode. Themessage sent to the second device may include a control message sent viaradio resource control (RRC) signaling that includes a BWP informationelement (IE). In some cases, the IE includes an additional one or morebits of information. The additional bit(s) may indicate that the BWP hasbeen configured for a high pathloss mode, and also may indicate that thereceiving device is to enter high pathloss mode operations (e.g., aftera time duration). Through the use of the additional bit(s), signalingfor entering or exiting a high pathloss mode may be reduced.

According to some aspects, in cases where the additional bit thatindicates BWP configuration indicates a high pathloss mode, rulesspecific to high pathloss operations may be defined (the time durationof certain signals, resources, and parameters would be available forconfiguration, interrupting PUSCH for TRSs, etc.), which may bedifferent for high pathloss mode operations compared to normaloperations. Such parameters may be configurable and dynamic betweenmultiple modes, but in other cases, some parameters may remain the same(e.g., may be static or not configurable) between modes. For instance,processing time related to control parameters (e.g., the latencyparameters related to scheduling data transmissions, receiving datatransmission, and acknowledgement (ACK) of data transmissions) may bestatic. In some examples, the timing between PDCCH scheduling a PDSCHand transmission of the corresponding PDSCH, the timing between a PDSCHand a corresponding physical uplink control channel (PUCCH) containingfeedback information (e.g., ACK or negative ACK (NACK)), the timingbetween a PDCCH scheduling an uplink data transmission and acorresponding PUSCH, and the timing between transmission of a PUSCH andtransmission of a corresponding PDCCH carrying feedback information, aswell as parameters related to control operations may remain the same forthe normal and high pathloss modes.

Aspects of the disclosure are initially described in the context ofwireless communications systems. Aspects are then described with respectto configuration parameters, timing diagrams, and a process flow.Aspects of the disclosure are further illustrated by and described withreference to apparatus diagrams, system diagrams, and flowcharts thatrelate to communication configuration for high pathloss operations.

FIG. 1 illustrates an example of a wireless communications system 100that supports communication configuration for high pathloss operationsin accordance with one or more aspects of the present disclosure. Thewireless communications system 100 includes base stations 105, UEs 115,and a core network 130. In some examples, the wireless communicationssystem 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced(A) network, an LTE-A Pro network, or a New Radio (NR) network. In somecases, wireless communications system 100 may support enhanced broadbandcommunications, ultra-reliable (e.g., mission critical) communications,low latency communications, or communications with low-cost andlow-complexity devices.

Base stations 105 may wirelessly communicate with UEs 115 via one ormore base station antennas. Base stations 105 described herein mayinclude or may be referred to by those skilled in the art as a basetransceiver station, a radio base station, an access point, a radiotransceiver, a NodeB, an eNodeB (eNB), a next-generation NodeB orgiga-NodeB (either of which may be referred to as a gNB), a Home NodeB,a Home eNodeB, or some other suitable terminology. Wirelesscommunications system 100 may include base stations 105 of differenttypes (e.g., macro or small cell base stations). The UEs 115 describedherein may be able to communicate with various types of base stations105 and network equipment including macro eNBs, small cell eNBs, gNBs,relay base stations, and the like.

Each base station 105 may be associated with a particular geographiccoverage area 110 in which communications with various UEs 115 issupported. Each base station 105 may provide communication coverage fora respective geographic coverage area 110 via communication links 125,and communication links 125 between a base station 105 and a UE 115 mayutilize one or more carriers. Communication links 125 shown in wirelesscommunications system 100 may include uplink transmissions from a UE 115to a base station 105, or downlink transmissions from a base station 105to a UE 115. Downlink transmissions may also be called forward linktransmissions while uplink transmissions may also be called reverse linktransmissions.

The geographic coverage area 110 for a base station 105 may be dividedinto sectors making up a portion of the geographic coverage area 110,and each sector may be associated with a cell. For example, each basestation 105 may provide communication coverage for a macro cell, a smallcell, a hot spot, or other types of cells, or various combinationsthereof. In some examples, a base station 105 may be movable andtherefore provide communication coverage for a moving geographiccoverage area 110. In some examples, different geographic coverage areas110 associated with different technologies may overlap, and overlappinggeographic coverage areas 110 associated with different technologies maybe supported by the same base station 105 or by different base stations105. The wireless communications system 100 may include, for example, aheterogeneous LTE/LTE-A/LTE-A Pro or NR network in which different typesof base stations 105 provide coverage for various geographic coverageareas 110.

The term “cell” refers to a logical communication entity used forcommunication with a base station 105 (e.g., over a carrier), and may beassociated with an identifier for distinguishing neighboring cells(e.g., a physical cell identifier (PCID), a virtual cell identifier(VCID)) operating via the same or a different carrier. In some examples,a carrier may support multiple cells, and different cells may beconfigured according to different protocol types (e.g., machine-typecommunication (MTC), narrowband Internet-of-Things (NB-IoT), enhancedmobile broadband (eMBB), or others) that may provide access fordifferent types of devices. In some cases, the term “cell” may refer toa portion of a geographic coverage area 110 (e.g., a sector) over whichthe logical entity operates.

UEs 115 may be dispersed throughout the wireless communications system100, and each UE 115 may be stationary or mobile. A UE 115 may also bereferred to as a mobile device, a wireless device, a remote device, ahandheld device, or a subscriber device, or some other suitableterminology, where the “device” may also be referred to as a unit, astation, a terminal, or a client. A UE 115 may also be a personalelectronic device such as a cellular phone, a personal digital assistant(PDA), a tablet computer, a laptop computer, or a personal computer. Insome examples, a UE 115 may also refer to a wireless local loop (WLL)station, an Internet of Things (IoT) device, an Internet of Everything(IoE) device, or an MTC device, or the like, which may be implemented invarious articles such as appliances, vehicles, meters, or the like.

Some UEs 115, such as MTC or IoT devices, may be low cost or lowcomplexity devices, and may provide for automated communication betweenmachines (e.g., via Machine-to-Machine (M2M) communication). M2Mcommunication or MTC may refer to data communication technologies thatallow devices to communicate with one another or a base station 105without human intervention. In some examples, M2M communication or MTCmay include communications from devices that integrate sensors or metersto measure or capture information and relay that information to acentral server or application program that can make use of theinformation or present the information to humans interacting with theprogram or application. Some UEs 115 may be designed to collectinformation or enable automated behavior of machines. Examples ofapplications for MTC devices include smart metering, inventorymonitoring, water level monitoring, equipment monitoring, healthcaremonitoring, wildlife monitoring, weather and geological eventmonitoring, fleet management and tracking, remote security sensing,physical access control, and transaction-based business charging.

Some UEs 115 may be configured to employ operating modes that reducepower consumption, such as half-duplex communications (e.g., a mode thatsupports one-way communication via transmission or reception, but nottransmission and reception simultaneously). In some examples half-duplexcommunications may be performed at a reduced peak rate. Other powerconservation techniques for UEs 115 include entering a power saving“deep sleep” mode when not engaging in active communications, oroperating over a limited bandwidth (e.g., according to narrowbandcommunications). In some cases, UEs 115 may be designed to supportcritical functions (e.g., mission critical functions), and a wirelesscommunications system 100 may be configured to provide ultra-reliablecommunications for these functions.

In some cases, a UE 115 may also be able to communicate directly withother UEs 115 (e.g., using a peer-to-peer (P2P) or device-to-device(D2D) protocol). One or more of a group of UEs 115 utilizing D2Dcommunications may be within the geographic coverage area 110 of a basestation 105. Other UEs 115 in such a group may be outside the geographiccoverage area 110 of a base station 105, or be otherwise unable toreceive transmissions from a base station 105. In some cases, groups ofUEs 115 communicating via D2D communications may utilize a one-to-many(1:M) system in which each UE 115 transmits to every other UE 115 in thegroup. In some cases, a base station 105 facilitates the scheduling ofresources for D2D communications. In other cases, D2D communications arecarried out between UEs 115 without the involvement of a base station105.

Base stations 105 may communicate with the core network 130 and with oneanother. For example, base stations 105 may interface with the corenetwork 130 through backhaul links 132 (e.g., via an S1, N2, N3, orother interface). Base stations 105 may communicate with one anotherover backhaul links 134 (e.g., via an X2, Xn, or other interface) eitherdirectly (e.g., directly between base stations 105) or indirectly (e.g.,via core network 130).

The core network 130 may provide user authentication, accessauthorization, tracking, Internet Protocol (IP) connectivity, and otheraccess, routing, or mobility functions. The core network 130 may be anevolved packet core (EPC), which may include at least one mobilitymanagement entity (MME), at least one serving gateway (S-GW), and atleast one Packet Data Network (PDN) gateway (P-GW). The MME may managenon-access stratum (e.g., control plane) functions such as mobility,authentication, and bearer management for UEs 115 served by basestations 105 associated with the EPC. User IP packets may be transferredthrough the S-GW, which itself may be connected to the P-GW. The P-GWmay provide IP address allocation as well as other functions. The P-GWmay be connected to the network operators IP services. The operators IPservices may include access to the Internet, Intranet(s), an IPMultimedia Subsystem (IMS), or a Packet-Switched (PS) Streaming Service.

At least some of the network devices, such as a base station 105, mayinclude subcomponents such as an access network entity, which may be anexample of an access node controller (ANC). Each access network entitymay communicate with UEs 115 through a number of other access networktransmission entities, which may be referred to as a radio head, a smartradio head, or a transmission/reception point (TRP). In someconfigurations, various functions of each access network entity or basestation 105 may be distributed across various network devices (e.g.,radio heads and access network controllers) or consolidated into asingle network device (e.g., a base station 105).

Wireless communications system 100 may operate using one or morefrequency bands, typically in the range of 300 megahertz (MHz) to 300GHz. In some cases, the region from 300 MHz to 3 GHz is known as theultra-high frequency (UHF) region or decimeter band, since thewavelengths range from approximately one decimeter to one meter inlength. UHF waves may be blocked or redirected by buildings andenvironmental features. However, the waves may penetrate structuressufficiently for a macro cell to provide service to UEs 115 locatedindoors. Transmission of UHF waves may be associated with smallerantennas and shorter range (e.g., less than 100 kilometers) compared totransmission using the smaller frequencies and longer waves of the highfrequency (HF) or very high frequency (VHF) portion of the spectrumbelow 300 MHz.

Wireless communications system 100 may also operate in a super highfrequency (SHF) region using frequency bands from 3 GHz to 30 GHz, alsoknown as the centimeter band. The SHF region includes bands such as the5 GHz industrial, scientific, and medical (ISM) bands, which may be usedopportunistically by devices that may be capable of toleratinginterference from other users.

Wireless communications system 100 may also operate in an extremely highfrequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz),also known as the millimeter band. In some examples, wirelesscommunications system 100 may support millimeter wave (mmW)communications between UEs 115 and base stations 105, and EHF antennasof the respective devices may be even smaller and more closely spacedthan UHF antennas. In some cases, this may facilitate use of antennaarrays within a UE 115. However, the propagation of EHF transmissionsmay be subject to even greater atmospheric attenuation and shorter rangethan SHF or UHF transmissions. Techniques disclosed herein may beemployed across transmissions that use one or more different frequencyregions, and designated use of bands across these frequency regions maydiffer by country or regulating body.

In some cases, wireless communications system 100 may utilize bothlicensed and unlicensed radio frequency spectrum bands. For example,wireless communications system 100 may employ License Assisted Access(LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technologyin an unlicensed band such as the 5 GHz ISM band. When operating inunlicensed radio frequency spectrum bands, wireless devices such as basestations 105 and UEs 115 may employ listen-before-talk (LBT) proceduresto ensure a frequency channel is clear before transmitting data. In somecases, operations in unlicensed bands may be based on a carrieraggregation configuration in conjunction with component carriersoperating in a licensed band (e.g., LAA). Operations in unlicensedspectrum may include downlink transmissions, uplink transmissions,peer-to-peer transmissions, or a combination of these. Duplexing inunlicensed spectrum may be based on frequency division duplexing (FDD),time division duplexing (TDD), or a combination of both.

In some examples, base station 105 or UE 115 may be equipped withmultiple antennas, which may be used to employ techniques such astransmit diversity, receive diversity, multiple-input multiple-output(MIMO) communications, or beamforming. For example, wirelesscommunications system 100 may use a transmission scheme between atransmitting device (e.g., a base station 105) and a receiving device(e.g., a UE 115), where the transmitting device is equipped withmultiple antennas and the receiving device is equipped with one or moreantennas. MIMO communications may employ multipath signal propagation toincrease the spectral efficiency by transmitting or receiving multiplesignals via different spatial layers, which may be referred to asspatial multiplexing. The multiple signals may, for example, betransmitted by the transmitting device via different antennas ordifferent combinations of antennas. Likewise, the multiple signals maybe received by the receiving device via different antennas or differentcombinations of antennas. Each of the multiple signals may be referredto as a separate spatial stream, and may carry bits associated with thesame data stream (e.g., the same codeword) or different data streams.Different spatial layers may be associated with different antenna portsused for channel measurement and reporting. MIMO techniques includesingle-user MIMO (SU-MIMO) where multiple spatial layers are transmittedto the same receiving device, and multiple-user MIMO (MU-MIMO) wheremultiple spatial layers are transmitted to multiple devices.

Beamforming, which may also be referred to as spatial filtering,directional transmission, or directional reception, is a signalprocessing technique that may be used at a transmitting device or areceiving device (e.g., a base station 105 or a UE 115) to shape orsteer an antenna beam (e.g., a transmit beam or receive beam) along aspatial path between the transmitting device and the receiving device.Beamforming may be achieved by combining the signals communicated viaantenna elements of an antenna array such that signals propagating atparticular orientations with respect to an antenna array experienceconstructive interference while others experience destructiveinterference. The adjustment of signals communicated via the antennaelements may include a transmitting device or a receiving deviceapplying certain amplitude and phase offsets to signals carried via eachof the antenna elements associated with the device. The adjustmentsassociated with each of the antenna elements may be defined by abeamforming weight set associated with a particular orientation (e.g.,with respect to the antenna array of the transmitting device orreceiving device, or with respect to some other orientation).

In one example, a base station 105 may use multiple antennas or antennaarrays to conduct beamforming operations for directional communicationswith a UE 115. For instance, some signals (e.g., synchronizationsignals, reference signals (RSs), beam selection signals, or othercontrol signals) may be transmitted by a base station 105 multiple timesin different directions, which may include a signal being transmittedaccording to different beamforming weight sets associated with differentdirections of transmission. Transmissions in different beam directionsmay be used to identify (e.g., by the base station 105 or a receivingdevice, such as a UE 115) a beam direction for subsequent transmissionor reception by the base station 105.

Some signals, such as data signals associated with a particularreceiving device, may be transmitted by a base station 105 in a singlebeam direction (e.g., a direction associated with the receiving device,such as a UE 115). In some examples, the beam direction associated withtransmissions along a single beam direction may be determined based atleast in in part on a signal that was transmitted in different beamdirections. For example, a UE 115 may receive one or more of the signalstransmitted by the base station 105 in different directions, and the UE115 may report to the base station 105 an indication of the signal itreceived with a highest signal quality, or an otherwise acceptablesignal quality. Although these techniques are described with referenceto signals transmitted in one or more directions by a base station 105,a UE 115 may employ similar techniques for transmitting signals multipletimes in different directions (e.g., for identifying a beam directionfor subsequent transmission or reception by the UE 115), or transmittinga signal in a single direction (e.g., for transmitting data to areceiving device).

A receiving device (e.g., a UE 115, which may be an example of a mmWreceiving device) may try multiple receive beams when receiving varioussignals from the base station 105, such as synchronization signals, RSs,beam selection signals, or other control signals. For example, areceiving device may try multiple receive directions by receiving viadifferent antenna subarrays, by processing received signals according todifferent antenna subarrays, by receiving according to different receivebeamforming weight sets applied to signals received at a plurality ofantenna elements of an antenna array, or by processing received signalsaccording to different receive beamforming weight sets applied tosignals received at a plurality of antenna elements of an antenna array,any of which may be referred to as “listening” according to differentreceive beams or receive directions. In some examples a receiving devicemay use a single receive beam to receive along a single beam direction(e.g., when receiving a data signal). The single receive beam may bealigned in a beam direction determined based at least in part onlistening according to different receive beam directions (e.g., a beamdirection determined to have a highest signal strength, highestsignal-to-noise ratio, or otherwise acceptable signal quality based atleast in part on listening according to multiple beam directions).

In some cases, the antennas of a base station 105 or UE 115 may belocated within one or more antenna arrays, which may support MIMOoperations, or transmit or receive beamforming. For example, one or morebase station antennas or antenna arrays may be co-located at an antennaassembly, such as an antenna tower. In some cases, antennas or antennaarrays associated with a base station 105 may be located in diversegeographic locations. A base station 105 may have an antenna array witha number of rows and columns of antenna ports that the base station 105may use to support beamforming of communications with a UE 115.Likewise, a UE 115 may have one or more antenna arrays that may supportvarious MIMO or beamforming operations.

In some cases, wireless communications system 100 may be a packet-basednetwork that operate according to a layered protocol stack. In the userplane, communications at the bearer or Packet Data Convergence Protocol(PDCP) layer may be IP-based. A Radio Link Control (RLC) layer mayperform packet segmentation and reassembly to communicate over logicalchannels. A Medium Access Control (MAC) layer may perform priorityhandling and multiplexing of logical channels into transport channels.The MAC layer may also use hybrid automatic repeat request (HARM) toprovide retransmission at the MAC layer to improve link efficiency. Inthe control plane, the RRC protocol layer may provide establishment,configuration, and maintenance of an RRC connection between a UE 115 anda base station 105 or core network 130 supporting radio bearers for userplane data. At the Physical layer, transport channels may be mapped tophysical channels.

In some cases, UEs 115 and base stations 105 may support retransmissionsof data to increase the likelihood that data is received successfully.HARQ feedback is one technique of increasing the likelihood that data isreceived correctly over a communication link 125. HARQ may include acombination of error detection (e.g., using a cyclic redundancy check(CRC)), forward error correction (FEC), and retransmission (e.g.,automatic repeat request (ARQ)). HARQ may improve throughput at the MAClayer in poor radio conditions (e.g., signal-to-noise conditions). Insome cases, a wireless device may support same-slot HARQ feedback, wherethe device may provide HARQ feedback in a specific slot for datareceived in a previous symbol in the slot. In other cases, the devicemay provide HARQ feedback in a subsequent slot, or according to someother time interval.

Time intervals in LTE or NR may be expressed in multiples of a basictime unit, which may, for example, refer to a sampling period of T_(s)=1/30,720,000 seconds. Time intervals of a communications resource may beorganized according to radio frames each having a duration of 10milliseconds (ms), where the frame period may be expressed asT_(f)=307,200 T_(s). The radio frames may be identified by a systemframe number (SFN) ranging from 0 to 1023. Each frame may include 10subframes numbered from 0 to 9, and each subframe may have a duration of1 ms. A subframe may be further divided into 2 slots each having aduration of 0.5 ms, and each slot may contain 6 or 7 modulation symbolperiods (e.g., depending on the length of the cyclic prefix prepended toeach symbol period). Excluding the cyclic prefix, each symbol period maycontain 2048 sampling periods. In some cases, a subframe may be thesmallest scheduling unit of the wireless communications system 100, andmay be referred to as a TTI. In other cases, a smallest scheduling unitof the wireless communications system 100 may be shorter than a subframeor may be dynamically selected (e.g., in bursts of shortened TTIs(sTTIs) or in selected component carriers using sTTIs).

In some wireless communications systems, a slot may further be dividedinto multiple mini-slots containing one or more symbols. In someinstances, a symbol of a mini-slot or a mini-slot may be the smallestunit of scheduling. Each symbol may vary in duration depending on thesubcarrier spacing or frequency band of operation, for example. Further,some wireless communications systems may implement slot aggregation inwhich multiple slots or mini-slots are aggregated together and used forcommunication between a UE 115 and a base station 105.

The term “carrier” refers to a set of radio frequency spectrum resourceshaving a defined physical layer structure for supporting communicationsover a communication link 125. For example, a carrier of a communicationlink 125 may include a portion of a radio frequency spectrum band thatis operated according to physical layer channels for a given radioaccess technology. Each physical layer channel may carry user data,control information, or other signaling. A carrier may be associatedwith a pre-defined frequency channel (e.g., an evolved universal mobiletelecommunication system terrestrial radio access (E-UTRA) absoluteradio frequency channel number (EARFCN)), and may be positionedaccording to a channel raster for discovery by UEs 115. Carriers may bedownlink or uplink (e.g., in an FDD mode), or be configured to carrydownlink and uplink communications (e.g., in a TDD mode). In someexamples, signal waveforms transmitted over a carrier may be made up ofmultiple sub-carriers (e.g., using multi-carrier modulation (MCM)techniques such as orthogonal frequency division multiplexing (OFDM) orDFT-S-OFDM.

The organizational structure of the carriers may be different fordifferent radio access technologies (RATs) such as LTE, LTE-A, LTE-APro, NR, etc. For example, communications over a carrier may beorganized according to TTIs or slots, each of which may include userdata as well as control information or signaling to support decoding theuser data. A carrier may also include dedicated acquisition signaling(synchronization signals or system information, etc.) and controlsignaling that coordinates operation for the carrier. In some examples(e.g., in a carrier aggregation configuration), a carrier may also haveacquisition signaling or control signaling that coordinates operationsfor other carriers.

Physical channels may be multiplexed on a carrier according to varioustechniques. A physical control channel and a physical data channel maybe multiplexed on a downlink carrier, for example, using time divisionmultiplexing (TDM) techniques, frequency division multiplexing (FDM)techniques, or hybrid TDM-FDM techniques. In some examples, controlinformation transmitted in a physical control channel may be distributedbetween different control regions in a cascaded manner (e.g., between acommon control region or common search space and one or more UE-specificcontrol regions or UE-specific search spaces).

A carrier may be associated with a particular bandwidth of the radiofrequency spectrum, and in some examples the carrier bandwidth may bereferred to as a “system bandwidth” of the carrier or the wirelesscommunications system 100. For example, the carrier bandwidth may be oneof a number of predetermined bandwidths for carriers of a particularradio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). Insome examples, each served UE 115 may be configured for operating overportions or all of the carrier bandwidth. In other examples, some UEs115 may be configured for operation using a narrowband protocol typethat is associated with a predefined portion or range (e.g., set ofsubcarriers or resource blocks (RBs)) within a carrier (e.g., “in-band”deployment of a narrowband protocol type).

In a system employing MCM techniques, a resource element may consist ofone symbol period (e.g., a duration of one modulation symbol) and onesubcarrier, where the symbol period and subcarrier spacing are inverselyrelated. The number of bits carried by each resource element may dependon the modulation scheme (e.g., the order of the modulation scheme).Thus, the more resource elements that a UE 115 receives and the higherthe order of the modulation scheme, the higher the data rate may be forthe UE 115. In MIMO systems, a wireless communications resource mayrefer to a combination of a radio frequency spectrum resource, a timeresource, and a spatial resource (e.g., spatial layers), and the use ofmultiple spatial layers may further increase the data rate forcommunications with a UE 115.

Devices of the wireless communications system 100 (e.g., base stations105 or UEs 115) may have a hardware configuration that supportscommunications over a particular carrier bandwidth, or may beconfigurable to support communications over one of a set of carrierbandwidths. In some examples, the wireless communications system 100 mayinclude base stations 105 or UEs 115 that support simultaneous orconcurrent communications via carriers associated with more than onedifferent carrier bandwidth.

Wireless communications system 100 may support communication with a UE115 on multiple cells or carriers, a feature which may be referred to ascarrier aggregation or multi-carrier operation. A UE 115 may beconfigured with multiple downlink component carriers and one or moreuplink component carriers according to a carrier aggregationconfiguration. Carrier aggregation may be used with both FDD and TDDcomponent carriers.

In some cases, wireless communications system 100 may utilize enhancedcomponent carriers (eCCs). An eCC may be characterized by one or morefeatures including wider carrier or frequency channel bandwidth, shortersymbol duration, shorter TTI duration, or modified control channelconfiguration. In some cases, an eCC may be associated with a carrieraggregation configuration or a dual connectivity configuration (e.g.,when multiple serving cells have a suboptimal or non-ideal backhaullink). An eCC may also be configured for use in unlicensed spectrum orshared spectrum (e.g., where more than one operator is allowed to usethe spectrum). An eCC characterized by wide carrier bandwidth mayinclude one or more segments that may be utilized by UEs 115 that arenot capable of monitoring the whole carrier bandwidth or are otherwiseconfigured to use a limited carrier bandwidth (e.g., to conserve power).

In some cases, an eCC may utilize a different symbol duration than othercomponent carriers, which may include use of a reduced symbol durationas compared with symbol durations of the other component carriers. Ashorter symbol duration may be associated with increased spacing betweenadjacent subcarriers. A device, such as a UE 115 or base station 105,utilizing eCCs may transmit wideband signals (according to frequencychannel or carrier bandwidths of 20, 40, 60, 80 MHz, etc.) at reducedsymbol durations (e.g., 16.67 microseconds). A TTI in eCC may consist ofone or multiple symbol periods. In some cases, the TTI duration (thatis, the number of symbol periods in a TTI) may be variable.

Wireless communications system 100 may be an NR system that may utilizeany combination of licensed, shared, and unlicensed spectrum bands,among others. The flexibility of eCC symbol duration and subcarrierspacing may allow for the use of eCC across multiple spectrums. In someexamples, NR shared spectrum may increase spectrum utilization andspectral efficiency, specifically through dynamic vertical (e.g., acrossthe frequency domain) and horizontal (e.g., across the time domain)sharing of resources.

As described herein, the devices of wireless communications system 100(e.g., base station 105 or UEs 115) may use techniques for configuringcommunications in different pathloss modes (e.g., a high pathloss mode,a normal pathloss mode). For example, one or more of the base stations105 or the UEs 115 may include a pathloss mode manager 101, which maymanage operations for a given device according to a high pathlossoperations mode or a normal pathloss operations mode. In some cases,upon entering a high pathloss mode, a base station 105, which may be anIAB node, may transmit a message to (e.g., the pathloss mode manager 101may transmit RRC signaling) a UE 115 or a neighboring base station 105to activate a high pathloss communication configuration forcommunicating with the base station 105. The high pathloss communicationconfiguration may be configured by the pathloss mode manager 101 and mayindicate a configuration for a high pathloss BWP. In some examples, thepathloss mode manager 101 may indicate that the receiving device is toenter high pathloss mode operations after a given time duration.

According to some aspects, some parameters may be configurable (e.g.,dynamic) between multiple modes, while other parameters may remain thesame (e.g., may be static or not configurable) between modes. Forinstance, processing time related to control parameters (e.g., thelatency parameters related to scheduling data transmissions, receivingdata transmission, and ACK of data transmissions) may be static as theprocessing time may be based on the capabilities of a receiving deviceand thus, independent of the pathloss. Additionally, or alternatively,parameters related to control operations may remain the same for thenormal and high pathloss modes. The pathloss mode manager 101 mayconfigure parameters for normal or high pathloss modes.

FIG. 2 illustrates an example of a wireless communications system 200that supports communication configuration for high pathloss operationsin accordance with one or more aspects of the present disclosure.Wireless communications system 200 (an NR system, a mmW system, etc.)may supplement wireline backhaul connections (e.g., wireline backhaullinks 220) by sharing infrastructure and spectral resources for networkaccess with wireless backhaul link capabilities, providing an IABnetwork architecture. Wireless communications system 200 may include acore network 205 and base stations 105 or supported devices split intoone or more support entities (i.e., functionalities) for promotingwireless backhaul density in collaboration with communication access.Aspects of the supporting functionalities of the base stations 105 maybe referred to as IAB nodes, such as IAB donor nodes 210 and IAB relaynodes 215. Wireless communications system 200 may additionally support anumber of UEs 115, which may communicate on the uplink with one or moreIAB donor nodes 210, IAB relay nodes 215, or a combination of thesedevices. In some examples, wireless communications system 200 mayimplement aspects of wireless communications system 100.

Wireless communications system 200 may include one or more IAB donornodes 210, which may interface between a wireline network and a wirelessnetwork. In some cases, an IAB donor node 210 may be referred to as ananchor node, as the IAB donor node 210 anchors the wireless network to awireline connection. For example, each IAB donor node 210 may include atleast one wireline backhaul link 220 and one or more additional links(wireless backhaul links 225, backup wireless backhaul links 230, accesslinks 235, etc.). An IAB donor node 210 may be split into associatedbase station centralized unit (CU) and distributed unit (DU) entities,where one or more DUs associated with an IAB donor node 210 may bepartially controlled by an associated CU. CUs of IAB donor nodes 210 mayhost layer 3 (L3) (e.g., RRC, service data adaption protocol (SDAP),PDCP) functionality and signaling. Furthermore, CUs of IAB donor nodes210 may communicate with the core network 205 over a wireline backhaullink 220 (e.g., which may be referred to as an NG interface). DUs mayhost lower layer operations, such as layer 1 (L1) or layer 2 (L2) (RLC,MAC, physical layer, etc.) functionality and signaling. A DU entity ofan IAB donor node 210 may support a serving cell within the networkcoverage area according to connections associated with wireless backhaullinks 225 and access links 235 of the IAB network. DUs of the IAB donornodes 210 may control both access and backhaul links within thecorresponding network coverage and may provide controlling andscheduling for descendant (i.e., child) IAB relay nodes 215 and or UEs115. For example, a DU may support an RLC channel connection with a UE115 (e.g., via an access link 235) or with an IAB relay node 215 (e.g.,via a backhaul link, such as a primary wireless backhaul link 225 or abackup wireless backhaul link 230).

IAB relay nodes 215 may be split into associated mobile terminal (MT)and base station DU entities, where MT functionality of the IAB relaynodes 215 may be controlled or scheduled by antecedent (i.e., parent)IAB nodes via wireless backhaul links. A parent node to an IAB relaynode 215 may be another (antecedent) IAB relay node 215 or an IAB donornode 210. The MT functionality may be similar to functionality performedby UEs 115 in the system. An IAB relay node 215 may not be directlyconnected to a wireline backhaul 220. Instead, the IAB relay node 215may connect to the core network 205 via other IAB nodes (e.g., anynumber of additional IAB relay nodes 215 and an IAB donor node 210)using wireless backhaul links. The IAB relay node 215 may transmitupstream (e.g., towards the core network 205) in the IAB system using MTfunctionality. In some cases, DUs of the IAB relay nodes 215 may bepartially controlled by signaling messages from CU entities of anassociated IAB donor node 210 (e.g., transmitted via an F1-applicationprotocol (AP)). The DUs of the IAB relay nodes 215 may support servingcells of the network coverage area. For example, a DU of an IAB relaynode 215 may perform the same or similar functions as a DU of an IABdonor node 210, supporting one or more access links 235 for UEs 115, oneor more wireless backhaul links for downstream IAB relay nodes 215, orboth.

Wireless communications system 200 may employ relay chains forcommunications within the IAB network architecture. For example, a UE115 may communicate with an IAB node, and the IAB node may relay thedata to a base station CU or the core network 205 either directly or viaone or more IAB relay nodes 215. Each IAB relay node 215 may include aprimary wireless backhaul link 225 for relaying data upstream orreceiving information from a base station CU or the core network 205. Insome cases, an IAB relay node 215 may additionally include one or morebackup wireless backhaul links 230 (e.g., for redundant connectivity orimproved robustness). If the primary wireless backhaul link 225 fails(due to interference, malfunction at a connected IAB node, movement ofIAB nodes, maintenance at IAB nodes, etc.), an IAB relay node 215 mayutilize a backup wireless backhaul link 230 for backhaul communicationwithin the IAB network. The first (e.g., primary) wireless backhaul link225 may be associated with a coverage area and MT functionality may becontrolled or scheduled by a first parent node. The one or moresecondary backhaul links (e.g., backup wireless backhaul links 230) maybe associated with a non-collocated coverage area and controlled orscheduled by one or more parent nodes. Each of the primary backhaulconnections and the one or more secondary connections may supportspectral capabilities to provide network communication over one or moreRATs. The one or more IAB nodes may further support base station DUentities and may support multiple backhaul and access links within therelay chain. The DU entities may control or schedule descendant IABrelay nodes 215 and UEs 115 within the IAB network (e.g., downstream inthe IAB network) via the configured backhaul and access links. That is,an IAB relay node 215 may act as a relay between an IAB donor node 210and one or more descendant devices (other IAB relay nodes 215, UEs 115,etc.) in both communication directions based on established backhaul andaccess connections.

IAB relay node 215 or IAB donor node 210 may operate in multiple modessuch as a high pathloss operation mode and a normal pathloss operationmode. The mode of operation may be based on the pathloss experiencedbetween the transmitting and receiving devices. In some cases, IAB donornode 210 may experience high pathloss with an IAB relay node 215 incommunication with the IAB donor node 210. In such instances, the IABdonor node 210 may transmit a message to the IAB relay node 215 toconfigure a BWP for high pathloss communications. After receiving themessage, IAB relay node 215 may enter high pathloss (e.g., after a giventime duration), and may communicate via the configured BWP for highpathloss communications. According to some aspects, some parameters maybe configurable (e.g., dynamic) between high pathloss mode and normalpathloss mode, while other parameters may remain the same (e.g., may bestatic or not configurable). For instance, processing time related tocontrol parameters or parameters related to control operations mayremain the same for the normal and high pathloss modes.

FIG. 3 illustrates an example of a wireless communications system 300that supports communication configuration for high pathloss operationsin accordance with one or more aspects of the present disclosure. Insome examples, wireless communications system 300 may implement aspectsof wireless communications systems 100 or 200. In some aspects, wirelesscommunications system 300 may operate within an IAB network. Forexample, IAB nodes 305, 310, and 315 may be nodes within a larger IABnetwork, and IAB node 305 may communicate with IAB node 310 or IAB node315 over wireless or wired backhaul links. IAB nodes 305, 310, and 315may be examples of wireless devices, relay nodes, donor nodes, or IABnodes as described herein.

Aspects of the described techniques enable support for wirelesscommunications over a radio frequency spectrum band in a high pathlossenvironment by utilizing a high pathloss mode. The high pathloss modemay utilize various parameters (modulation and coding scheme (MCS),HARQ, aggregation level, RSs, etc.) that may be configured or otherwiseselected to support wireless communications over the radio frequencyspectrum band experiencing a pathloss that satisfies (or exceeds) athreshold pathloss value.

In some cases, wireless devices (e.g., IAB nodes 305, 310, or 315) mayoperate in one of more pathloss modes such as a high pathloss mode whenthe pathloss value satisfies (or exceeds) a threshold pathloss value ora normal (e.g., low) pathloss mode when the pathloss value is below thethreshold pathloss value. For instance, one or more wireless devices mayperform wireless communications in the wireless communications system300 over a radio frequency spectrum band. In some aspects, this mayinclude the wireless device(s) operating in a first pathloss mode (e.g.,a low pathloss mode or normal mode) in the wireless communicationssystem 300. The wireless device(s) may receive a signal that indicatesthat the pathloss value has satisfied (or exceeded) a threshold pathlossvalue. As one example, the wireless device(s) may monitor a channel ofthe radio frequency spectrum band (e.g., monitor signals beingcommunicated over the channel) and determine that the pathloss value hassatisfied (or exceeded) the threshold pathloss value. In anotherexample, the wireless device(s) may receive a signal from anotherwireless device indicating that the pathloss value has satisfied (orexceeded) the threshold pathloss value. Accordingly, the wirelessdevice(s) may switch from the first pathloss mode (e.g., a low pathlossmode) to a second pathloss mode (e.g., high pathloss mode) and continueto perform wireless communications. The second pathloss mode (e.g., thehigh pathloss mode) may include one or more parameters to supportcontinued wireless communications in the high pathloss environment.Examples of the parameters that may be adjusted may include, but are notlimited to, the length of the synchronization signal block (SSB) in thehigh pathloss mode being longer, the length of an RS in the highpathloss mode being longer, an MCS in the high pathloss mode beinglower, and the like. Accordingly, the wireless devices may continue toperform wireless communications in the wireless communications system300 in the high pathloss environment according to the second pathlossmode (e.g., the high pathloss mode).

As shown, IAB node 305 may communicate with IAB node 310 in a highpathloss mode (e.g., if the high pathloss mode is activated at IAB node305 for these communications) and may communicate with IAB node 315 in anormal mode (e.g., if the high pathloss mode is deactivated at IAB node305 for these other communications). An indication of which mode to usefor communication may be transmitted from IAB node 305 to one or both ofIAB nodes 310 and 315. For example, IAB node 305 may transmit acommunication configuration 320-a to IAB node 310 to communicate in highpathloss mode. The communication configuration 320-a may instruct IABnode 310 to operate in the high pathloss mode for communications withIAB node 305. The communication configuration 320-a may include a BWP IE325-a that indicates BWP parameters for the BWP used for communicationbetween IAB node 305 and IAB node 310. In some examples, thecommunication configuration 320-a may include one or more additionalbits 330-a, which may indicate the BWP identified by BWP IE 325-a isconfigured for high pathloss communications. As shown, the one or moreadditional bits 330-a may be a part of the BWP IE 325-a.

For normal mode operations, IAB node 305 may transmit a communicationconfiguration 320-b to IAB node 315. The communication configuration320-b may include a BWP IE 325-b, and one or more additional bits 330-b,which may be a part of the BWP IE 330-b. The one or more additional bits330-b may indicate that the BWP identified by BWP IE 325-b is configuredfor normal mode communications. Based on the communicationconfiguration(s) 320, the DU or MT functionality of an IAB node 305,310, or 315 may be configured with different downlink or uplink BWPs forhigh pathloss mode and normal mode that may be activated based on thecommunication configuration(s) 320 sent to the respective IAB node 310or 315. For example, IAB node 310 may perform communications using thehigh pathloss BWP identified by BWP IE 325-a upon reception (or after aduration following reception) of communication configuration 320-a.

In some cases, IAB node 305 may enter a high pathloss mode and maycommunicate with IAB node 310 after a given time interval. For example,the communication configuration 320-a may include timing information(e.g., an indication of a time interval that IAB node 310 is to waitbefore operating in high pathloss mode), and IAB node 305 may instructIAB node 310 to activate a high pathloss BWP based on this timinginformation. In some cases, the BWP IE 325-a may include additionalinformation (e.g., via the one or more additional bits 330-a) whichindicates the BWP may be configured for the high pathloss mode, whichsignals to the MT of IAB node 310 to fully enter the high pathloss modeafter a specific time and reduced, or no, additional signaling may beused for entering or exiting high pathloss mode.

In some aspects, configuration parameters of the communicationconfiguration 320 may be configured differently between pathloss modes(e.g., a first subset of configuration parameters may be variablebetween high pathloss mode and normal mode, while a second subset ofconfiguration parameters may be configured to be the same between highpathloss mode and normal mode). For example, control resource set(CORESET) parameters, CSI resources, and SRS resources may be differentbetween high pathloss mode and normal mode. Further, if the one or moreadditional bits 330 correspond to a high pathloss mode (such as the oneor more additional bits 330-a), a longer time duration for TTIs may beimplemented for communications in the high pathloss mode as compared tothe time duration associated with TTIs for normal mode. Additionally, oralternatively, rules specific to the high pathloss mode may be invoked(e.g., rules relating to procedures for interrupting data channels, suchas a shared data channel, with an RS, such as a TRS).

In some cases, other parameters (e.g., a second subset of configurationparameters) may be configured to be the same between high pathloss andnormal mode operations. For example, processing time related controlparameters (e.g., latency parameters related to scheduling, parametersrelated to control operations) may remain the same for normal and highpathloss modes.

FIG. 4 illustrates example configuration parameters 400 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. In some examples,configuration parameters 400 may implement aspects of wirelesscommunications systems 100, 200, or 300. Configuration parameters 400may include a set of configuration parameters for configuringcommunications according to different pathloss modes.

In some examples, one or more configuration parameters 400 may beconfigured to support high pathloss mode communications (e.g., fordevices operating in a high pathloss mode, such as a parent IAB nodecommunicating with a child IAB node using a high pathloss communicationlink). Further, one or more configuration parameters 400 may beconfigured to support normal mode communications (e.g., for devicesoperating in a normal pathloss mode, such as a parent IAB nodecommunicating with a child IAB node using a normal pathlosscommunication link).

In some cases, a subset of configuration parameters 400 may beconfigurable between pathloss modes. For example, one or moreconfiguration parameters 400 may be variable or dynamic between pathlossmodes, while other configuration parameters 400 may be static and remainthe same between different pathloss modes. In one example, a subset ofthe configuration parameters 400 that may be different for high pathlossmode operation compared to normal mode operation. Such parameters mayinclude CORESET parameters (e.g., CORESET #0 information or commonCORESET information, CSI-RS parameters (e.g., CSI-RS resourceconfiguration, periodicity, measurement information), and SRS parameters(e.g., SRS configuration, SRS resources). Other configurable parametersmay include uplink control information (UCI) parameters (e.g., UCIresources), MCS parameters (e.g., modulation order, coding scheme), anduplink or downlink BWP parameters (control or data channel configurationparameters, frequency location, numerology, timing information, etc.).Demodulation RS (DMRS) parameters (DMRS resources or mapping type), HARQparameters (HARQ feedback information such as #HARQ N1, MCS, etc.), SSBparameters (SSB position, periodicity, or power), uplink or downlink TTIinformation (e.g., uplink TTI duration and location, downlink TTIduration and location), aggregation level parameters, beam parameters(e.g., beam width or index), bandwidth parameters (cell RS ports,frequency information, etc.), TRS parameters (e.g., rules forinterrupting PUSCH), and random access channel (RACH) parameters (e.g.,RACH timing and resources), among others may also be configurablebetween different pathloss modes.

For example, one or more MCS parameters of the configuration parameters400 may be configurable between pathloss modes. An MCS parameter may beassociated with or include an MCS table with a number of entries (e.g.,16 entries). An entry may correspond to a coding rate or modulationorder (e.g., quadrature phase shift keying (QPSK), quadrature amplitudemodulation (QAM) formats such as QAM16, QAM 64, and the like). In someexamples, the MCS table may be configurable based on a pathloss mode.For example, the MCS table used for a normal pathloss operation mode maybe different from the MCS table used for a high pathloss operation mode.In some examples, the MCS tables may be different (e.g., each MCS tablemay include different entries) based on channel conditions. For example,an MCS table may include different entries based on a pathloss dynamicrange (e.g., whether the pathloss dynamic range is associated with anormal pathloss operation mode or a high pathloss operation mode), asignal-to-interference-plus-noise ratio (SINR), or any other channelcondition metrics.

In some examples, a wireless device (e.g., a base station 105 or aparent IAB node) may send a control transmission (e.g., a PDCCHtransmission) to a receiving wireless device (e.g., a UE 115 or a childIAB node). The control transmission may schedule a shared channeltransmission (e.g., a PDSCH transmission or a PUSCH transmission). Thecontrol transmission may also include DCI, which may indicate, to thereceiving wireless device, one or more configuration parameters 400. Forinstance, the DCI may indicate the MCS parameter (e.g., an entry of theMCS table) to the receiving wireless device. The receiving wirelessdevice may determine a coding rate and modulation order based on theindication in the DCI (e.g., the coding rate and modulation orderassociated with the indicated entry of the MCS table). The receivingwireless device may use the determined coding and modulation order totransmit or receive a scheduled shared channel transmission.

Other configuration parameters 400 may be configured similarly betweenhigh pathloss and normal modes. For example, configuration parameters400 such as time-related control parameters (e.g., processing timerelated parameters, latency parameters, switching time parameters,scheduling parameters, or any combination of these or similar controlparameters) may be similarly configured for both high pathloss andnormal modes. Further, other control operation parameters, such astiming for beam change (e.g., timing between beam change command and thechange of the beam), may be similarly configured for both high pathlossand normal modes.

FIG. 5 illustrates example timing diagrams 500 that supportcommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. In some examples,timing diagrams 500 may implement aspects of wireless communicationssystems 100, 200, or 300. Timing diagrams 500 may be representative oftimings for communications of one or more messages between atransmitting device and a receive device, each of which may be awireless device in an IAB network. As illustrated in timing diagrams500, which are associated with different pathloss modes, somecommunication configuration parameters (e.g., TTI duration) may bedifferent for different pathloss modes, while other communicationconfiguration parameters (e.g., processing time) may be the same betweenmodes.

As shown, timing diagram 500-a may be associated with a normal operationmode (e.g., a normal pathloss mode) and shows two messages, Message A505-a and Message B 510-a, that may be exchanged between two devices.According to timing diagram 500-a, a first wireless device (e.g., aparent IAB node) may transmit or receive Message A 505-a and in turn, asecond wireless device (e.g., a child IAB node) may transmit or receiveMessage B 510-a after a time period 515. Timing diagram 500-b may beassociated with a high pathloss operation mode (e.g., a high pathlossmode) and shows two messages, Message A 505-b and Message B 510-b, thatmay be exchanged between two devices. According to timing diagram 500-b,a first wireless device (e.g., a parent IAB node) may transmit orreceive Message A 505-b and in turn, a second wireless device (e.g., achild IAB node) may transmit or receive Message B 510-b after a timeperiod 515, which may be the same as time period 515 in timing diagram500-a.

In some cases, time period 515 may correspond to one or more processingtime related control parameters (e.g., latency parameters related toscheduling, data, and feedback for communications between two devices).In another example, time period 515 may correspond to control operations(e.g., the time from a transmitting beam change command to the commandtaking effect). As illustrated by timing diagrams 500, the processingtime related control operations or other control operations may notchange between operation modes (e.g., time period 515 may be equal inboth the high pathloss mode and the normal mode).

Message A 505 and Message B 510 may each be associated with differentmessage types or communication scenarios and although transmissionduration for each of the messages may be longer in high pathloss modecompared to normal mode, other parameters (e.g., processing time,switching time) may be similar in both modes. In some cases, theduration for time period 515 may be based on capabilities of the devicesexchanging Message A 505 and Message B.

In one example, Message A 505 may be a PDCCH that schedules acorresponding downlink data channel (e.g., PDSCH) or uplink data channel(e.g., PUSCH), represented by Message B. In both high pathloss mode andnormal mode as shown by timing diagrams 500-a and 500-b, the time period515 between receipt of the PDCCH and the transmission of the PDSCH orPUSCH scheduled by the PDCCH remains the same.

In another example, Message A 505 may be a PUSCH or a PDSCH and MessageB 510 may be a control channel (e.g., PUCCH or PDCCH) associated withfeedback for Message A 505. In such instances, Message A 505 may betransmitted to a receiving device, and the receiving device may generatefeedback based on whether Message A 505 was received successfully. Thereceiving device may transmit Message B 510 containing the generatedfeedback information for Message A 505 after time period 515, which maybe similar for both normal and high pathloss modes. Here, the timeperiod 515 between transmission of a data channel (e.g., PDSCH orPUSCH), Message A 505, and transmission of a control channel (e.g.,PUCCH, PDCCH), Message B 510, carrying feedback information for the datachannel may be fixed

FIG. 6 illustrates an example of a process flow 600 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. In some examples,process flow 600 may implement aspects of wireless communicationssystems 100, 200, or 300. Aspects of process flow 600 may be implementedby a first wireless device 605, a second wireless device 610, and athird wireless device 615, each of which may be examples of an IAB node,a base station, or a UE, as described herein. Aspects of process flow600 may be implemented over a wireless network, such as a mmW radiofrequency spectrum band and first wireless device 605, second wirelessdevice 610, and third wireless device 615 may be part of an IAB network.

At 620, the first wireless device 605 may transmit a signal indicating acommunication configuration for operation in a first mode, such as apathloss mode (e.g., a high pathloss mode), to a second wireless device610. The communication configuration may be transmitted via RRCsignaling and may include an indication of a BWP, an SSB, or acombination configured for high pathloss communications between thefirst wireless device 605 and the second wireless device 610. In someexamples, the communication configuration may include a BWP IE, whichmay include one or more bits, specifying that the BWP is configured forhigh pathloss mode and also may indicate that the second wireless device610 is to enter high pathloss mode after a given time.

At 625, the first wireless device 605 and the second wireless device 610may operate (e.g., performing wireless communications) in a firstpathloss mode in a wireless network over a radio frequency spectrumband. Operating in the first pathloss mode such as a high pathloss modemay involve communications between the first wireless device 605 and thesecond wireless device 610 over a BWP configured for the high pathlossmode. In some cases, the first pathloss mode may have associatedconfiguration parameters such as an associated first MCS, an associatedfirst bandwidth, an associated first beam width, and the like, which maybe the same or different between modes.

At 630, the first wireless device 605 may transmit a signal indicating aconfiguration for a communications configuration in a second mode, suchas a second pathloss mode (e.g., a normal pathloss mode), to a thirdwireless device 615. The communication configuration may be transmittedvia RRC signaling and may include an indication of a BWP, and SSB, or acombination configured for normal communications between the firstwireless device 605 and the third wireless device 615. In some examples,the communication configuration may include a BWP IE, which may includeone or more bits, specifying that the BWP is configured for normalpathloss mode and also may indicate that the third wireless device 615is to enter normal pathloss mode after a given time.

At 635, the first wireless device 605 and the third wireless device 615may operate (e.g., performing wireless communications) in a secondpathloss mode in a wireless network over a radio frequency spectrumband. Operating in the second pathloss mode such as a normal pathlossmode may involve communications between the first wireless device 605and the third wireless device 615 over a BWP configured for the normalpathloss mode. In some cases, the second pathloss mode may haveassociated configuration parameters such as an associated first MCS, anassociated first bandwidth, an associated first beam width, and thelike, which may be the same or different than corresponding parametersof the first pathloss mode.

At 640, the first wireless device 605 and the second wireless device 610may communicate via a normal mode BWP. Likewise, at 645 the firstwireless device 605 and the third wireless device 615 may communicatevia a high pathloss BWP.

It is to be understood that the second wireless device 610 may switchfrom the first pathloss mode to the second pathloss mode (e.g., based onsignaling from the first wireless device 605) and the third wirelessdevice 615 may switch to the first pathloss mode from the secondpathloss mode.

FIG. 7 shows a block diagram 700 of a device 705 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The device 705 maybe an example of aspects of an IAB node, a UE 115, or base station 105as described herein. The device 705 may include a receiver 710, apathloss mode manager 715, and a transmitter 720. The device 705 mayalso include a processor. Each of these components may be incommunication with one another (e.g., via one or more buses).

Receiver 710 may receive information such as packets, user data, orcontrol information associated with various information channels(control channels, data channels, and information related tocommunication configuration for high pathloss operations, etc.).Information may be passed on to other components of the device 705. Thereceiver 710 may be an example of aspects of the transceiver 1020 or1120 as described with reference to FIGS. 10 and 11 . The receiver 710may utilize a single antenna or a set of antennas.

The pathloss mode manager 715 may identify a communication configurationfor a second wireless device, the communication configuration indicatingone or more configuration parameters for a BWP associated with a firstpathloss mode, transmit an indication of the communication configurationto the second wireless device for operating in the first pathloss mode,where a first length of a first TTI associated with the first pathlossmode is different from a second length of a second TTI associated with asecond pathloss mode, and communicate with the second wireless deviceoperating in the first pathloss mode via the BWP based on the one ormore configuration parameters for the BWP.

Additionally, or alternatively, the pathloss mode manager 715 mayreceive, from a second wireless device, an indication of a communicationconfiguration for operating in a first pathloss mode, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with the first pathloss mode and communicate with the secondwireless device in the first pathloss mode via the BWP based on the oneor more configuration parameters for the BWP, where a first length of afirst TTI associated with the first pathloss mode is different from asecond length of a second TTI associated with a second pathloss mode.

Additionally, or alternatively, the pathloss mode manager 715 mayidentify a communication configuration for a second wireless device, thecommunication configuration including one or more configurationparameters for a BWP associated with a first pathloss mode andcommunicate with the second wireless device via the BWP according to thefirst pathloss mode based on the one or more configuration parameters,where a first length of a first TTI associated with the first pathlossmode is different from a second length of a second TTI associated with asecond pathloss mode. The pathloss mode manager 715 may be an example ofaspects of the pathloss mode manager 1010 or 1110 as described herein.

The actions performed by the pathloss mode manager 715 as describedherein may support improvements in signaling overhead related toswitching from a high pathloss mode to a normal mode. In one or moreaspects, a parent node entering a high pathloss mode may send anindication to a second device to activate a high pathloss communicationconfiguration. The indication may allow the second device to enable ahigh pathloss mode, which may result in more efficient communications(e.g., decreased latency in the system), among other improvements.

Based on a parent device signaling a mode to a second device asdescribed herein, a processor of a wireless node (e.g., a processorcontrolling the receiver 710, the pathloss mode manager 715, thetransmitter 720, or a combination thereof) may improve complexity whileensuring relatively efficient communications. For example, a second nodefollowing a parent node in mode switching may realize reduced signalingoverhead and power savings, among other benefits.

The pathloss mode manager 715, or its sub-components, may be implementedin hardware, code (e.g., software or firmware) executed by a processor,or any combination thereof. If implemented in code executed by aprocessor, the functions of the pathloss mode manager 715, or itssub-components may be executed by a general-purpose processor, a digitalsignal processor (DSP), an application-specific integrated circuit(ASIC), a field programmable gate array (FPGA) or other programmablelogic device, discrete gate or transistor logic, discrete hardwarecomponents, or any combination thereof designed to perform the functionsdescribed in the present disclosure.

The pathloss mode manager 715, or its sub-components, may be physicallylocated at various positions, including being distributed such thatportions of functions are implemented at different physical locations byone or more physical components. In some examples, the pathloss modemanager 715, or its sub-components, may be a separate and distinctcomponent in accordance with various aspects of the present disclosure.In some examples, the pathloss mode manager 715, or its sub-components,may be combined with one or more other hardware components, includingbut not limited to an input/output (I/O) component, a transceiver, anetwork server, another computing device, one or more other componentsdescribed in the present disclosure, or a combination thereof inaccordance with various aspects of the present disclosure.

Transmitter 720 may transmit signals generated by other components ofthe device 705. In some examples, the transmitter 720 may be collocatedwith a receiver 710 in a transceiver module. For example, thetransmitter 720 may be an example of aspects of the transceiver 1020 or1120 as described with reference to FIGS. 10 and 11 . The transmitter720 may utilize a single antenna or a set of antennas.

FIG. 8 shows a block diagram 800 of a device 805 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The device 805 maybe an example of aspects of a device 705, a UE 115, or a base station105 as described herein. The device 805 may include a receiver 810, apathloss mode manager 815, and a transmitter 840. The device 805 mayalso include a processor. Each of these components may be incommunication with one another (e.g., via one or more buses).

Receiver 810 may receive information such as packets, user data, orcontrol information associated with various information channels(control channels, data channels, and information related tocommunication configuration for high pathloss operations, etc.).Information may be passed on to other components of the device 805. Thereceiver 810 may be an example of aspects of the transceiver 1020 or1120 as described with reference to FIGS. 10 and 11 . The receiver 810may utilize a single antenna or a set of antennas.

The pathloss mode manager 815 may be an example of aspects of thepathloss mode manager 715 as described herein. The pathloss mode manager815 may include a configuration manager 820, a configuration transmitter825, a communications component 830, and a configuration receiver 835.The pathloss mode manager 815 may be an example of aspects of thepathloss mode manager 1010 or 1110 as described herein.

In some examples (e.g., when acting as a parent node in an IAB network),the configuration manager 820 may identify a communication configurationfor a second wireless device, the communication configuration indicatingone or more configuration parameters for a BWP associated with a firstpathloss mode. The configuration transmitter 825 may transmit anindication of the communication configuration to the second wirelessdevice for operating in the first pathloss mode, where a first length ofa first TTI associated with the first pathloss mode is different from asecond length of a second TTI associated with a second pathloss mode.The communications component 830 may communicate with the secondwireless device operating in the first pathloss mode via the BWP basedon the one or more configuration parameters for the BWP.

In some examples (e.g., when acting as a child node in an IAB network),the configuration receiver 835 may receive, from a second wirelessdevice, an indication of a communication configuration for operating ina first pathloss mode, the communication configuration indicating one ormore configuration parameters for a BWP associated with the firstpathloss mode. The communications component 830 may communicate with thesecond wireless device in the first pathloss mode via the BWP based onthe one or more configuration parameters for the BWP, where a firstlength of a first TTI associated with the first pathloss mode isdifferent from a second length of a second TTI associated with a secondpathloss mode.

In some examples (e.g., when acting as a parent or child node in an IABnetwork), the configuration manager 820 may identify a communicationconfiguration for a second wireless device, the communicationconfiguration including one or more configuration parameters for a BWPassociated with a first pathloss mode. The communications component 830may communicate with the second wireless device via the BWP according tothe first pathloss mode based on the one or more configurationparameters, where a first length of a first TTI associated with thefirst pathloss mode is different from a second length of a second TTIassociated with a second pathloss mode.

Transmitter 840 may transmit signals generated by other components ofthe device 805. In some examples, the transmitter 840 may be collocatedwith a receiver 810 in a transceiver module. For example, thetransmitter 840 may be an example of aspects of the transceiver 1020 or1120 as described with reference to FIGS. 10 and 11 . The transmitter840 may utilize a single antenna or a set of antennas.

FIG. 9 shows a block diagram 900 of a pathloss mode manager 905 thatsupports communication configuration for high pathloss operations inaccordance with one or more aspects of the present disclosure. Thepathloss mode manager 905 may be an example of aspects of a pathlossmode manager 715, a pathloss mode manager 815, or a pathloss modemanager 1010 described herein. The pathloss mode manager 905 may includea configuration manager 910, a configuration transmitter 915, acommunications component 920, an operations module 925, an IE component930, a BWP manager 935, and a configuration receiver 940. Each of thesemodules may communicate, directly or indirectly, with one another (e.g.,via one or more buses).

The configuration manager 910 may identify a communication configurationfor a second wireless device, the communication configuration indicatingone or more configuration parameters for a BWP associated with a firstpathloss mode. In some cases, the first wireless device and the secondwireless device are IAB nodes operating in an IAB network. In someexamples, the one or more configuration parameters include at least oneof control resource set information, CSI resources, SRS resources, a TTIduration, TRS information, or any combination thereof associated withthe BWP. In some aspects, at least one of the one or more configurationparameters are the same as one or more configuration parameters for asecond BWP associated with the second pathloss mode. In some instances,a processing time parameter, a transmission beam parameter, a latencyparameter, or any combination thereof of the one or more configurationparameters is the same as a corresponding parameter of the one or moreconfiguration parameters for the second BWP.

The configuration transmitter 915 may transmit an indication of thecommunication configuration to the second wireless device for operatingin the first pathloss mode, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode. In someexamples, the configuration transmitter 915 may transmit the indicationof the communication configuration to the second wireless device for thesecond wireless device to communicate via the BWP based on operating inthe first pathloss mode. In some aspects, the configuration transmitter915 may transmit the indication of the communication configuration viaRRC signaling or DCI. In some cases, the first pathloss mode is a highpathloss mode and the second pathloss mode is a normal mode. In someinstances, the first length of the first TTI associated with the firstpathloss mode is longer than the second length of the second TTIassociated with the second pathloss mode.

The communications component 920 may communicate with the secondwireless device operating in the first pathloss mode via the BWP basedon the one or more configuration parameters for the BWP. In someexamples, the communications component 920 may communicate with thesecond wireless device in the first pathloss mode via the BWP based onthe one or more configuration parameters for the BWP, where a firstlength of a first TTI associated with the first pathloss mode isdifferent from a second length of a second TTI associated with a secondpathloss mode. In some aspects, the communications component 920 maycommunicate with the second wireless device via the BWP according to thefirst pathloss mode based on the one or more configuration parameters,where a first length of a first TTI associated with the first pathlossmode is different from a second length of a second TTI associated with asecond pathloss mode. In some examples, the communications component 920may communicate with the second wireless device via the BWP after a timeduration indicated by the communication configuration. In some cases,the communications component 920 may communicate via the BWP after atime duration indicated by the communication configuration. In someinstances, the communications component 920 may communicate with thesecond wireless device via the BWP after a time duration after enteringthe first pathloss mode.

The configuration receiver 940 may receive, from a second wirelessdevice, an indication of a communication configuration for operating ina first pathloss mode, the communication configuration indicating one ormore configuration parameters for a BWP associated with the firstpathloss mode. In some examples, the configuration receiver 940 mayreceive the indication of the communication configuration to communicatevia the BWP based on the first wireless device operating in the firstpathloss mode. In some cases, the configuration receiver 940 may receivethe indication of the communication configuration via RRC signaling orDCI.

The operations module 925 may operate in the first pathloss mode forcommunications with the second wireless device. In some examples, theoperations module 925 may enter the first pathloss mode forcommunications with the second wireless device.

The IE component 930 may transmit an IE for the BWP in the one or moreconfiguration parameters, the IE indicating that the BWP is configuredfor the first pathloss mode. In some examples, the IE component 930 mayidentify an IE associated with the BWP in the one or more configurationparameters, the IE indicating that the BWP is configured for the firstpathloss mode. In some cases, the one or more configuration parametersincludes at least one of control resource set information, CSIresources, SRS resources, a TTI duration, TRS information, or anycombination thereof associated with the BWP. In some aspects, the IEincludes a single bit field. In some instances, at least a portion ofthe one or more configuration parameters are the same as one or moreconfiguration parameters for a second BWP associated with the secondpathloss mode. In some cases, a processing time parameter, atransmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters is the same as acorresponding parameter of the one or more configuration parameters forthe second BWP. In some cases, the one or more configuration parametersincludes at least one of control resource set information, CSIresources, SRS resources, a TTI duration, TRS information, or anycombination thereof associated with the BWP.

The BWP manager 935 may configure the BWP for the second wireless devicefor communications in the first pathloss mode, the BWP including one ofa downlink BWP or an uplink BWP. In some examples, the BWP manager 935may configure a second BWP for the second wireless device forcommunications in the second pathloss mode. In some cases, the BWPmanager 935 may configure the BWP for the second wireless device forcommunications in the first pathloss mode based on the one or moreconfiguration parameters for the BWP.

FIG. 10 shows a diagram of a system 1000 including a device 1005 thatsupports communication configuration for high pathloss operations inaccordance with one or more aspects of the present disclosure. Thedevice 1005 may be an example of or include the components of device705, device 805, or a UE 115 as described herein. The device 1005 mayinclude components for bi-directional voice and data communicationsincluding components for transmitting and receiving communications,including a pathloss mode manager 1010, a transceiver 1020, an antenna1025, memory 1030, a processor 1040, and an I/O controller 1050. Thesecomponents may be in electronic communication via one or more buses(e.g., bus 1055).

The pathloss mode manager 1010 may identify a communicationconfiguration for a second wireless device, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with a first pathloss mode, transmit an indication of thecommunication configuration to the second wireless device for operatingin the first pathloss mode, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode, andcommunicate with the second wireless device operating in the firstpathloss mode via the BWP based on the one or more configurationparameters for the BWP.

Additionally, or alternatively, the pathloss mode manager 1010 mayreceive, from a second wireless device, an indication of a communicationconfiguration for operating in a first pathloss mode, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with the first pathloss mode and communicate with the secondwireless device in the first pathloss mode via the BWP based on the oneor more configuration parameters for the BWP, where a first length of afirst TTI associated with the first pathloss mode is different from asecond length of a second TTI associated with a second pathloss mode.

Additionally, or alternatively, the pathloss mode manager 1010 mayidentify a communication configuration for a second wireless device, thecommunication configuration including one or more configurationparameters for a BWP associated with a first pathloss mode andcommunicate with the second wireless device via the BWP according to thefirst pathloss mode based on the one or more configuration parameters,where a first length of a first TTI associated with the first pathlossmode is different from a second length of a second TTI associated with asecond pathloss mode.

Transceiver 1020 may communicate bi-directionally, via one or moreantennas, wired, or wireless links as described above. For example, thetransceiver 1020 may represent a wireless transceiver and maycommunicate bi-directionally with another wireless transceiver. Thetransceiver 1020 may also include a modem to modulate the packets andprovide the modulated packets to the antennas for transmission, and todemodulate packets received from the antennas.

In some cases, the device 1005 may include a single antenna 1025, or thedevice 1005 may have more than one antenna 1025, which may be capable ofconcurrently transmitting or receiving multiple wireless transmissions.

The memory 1030 may include random access memory (RAM), read only memory(ROM), or a combination thereof. The memory 1030 may storecomputer-readable code 1035 including instructions that, when executedby a processor (e.g., the processor 1040) cause the device to performvarious functions described herein. In some cases, the memory 1030 maycontain, among other things, a basic I/O system (BIOS) which may controlbasic hardware or software operation such as the interaction withperipheral components or devices.

The processor 1040 may include an intelligent hardware device, (e.g., ageneral-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, anFPGA, a programmable logic device, a discrete gate or transistor logiccomponent, a discrete hardware component, or any combination thereof).In some cases, the processor 1040 may be configured to operate a memoryarray using a memory controller. In other cases, a memory controller maybe integrated into the processor 1040. The processor 1040 may beconfigured to execute computer-readable instructions stored in a memory(e.g., the memory 1030) to cause the device 1005 to perform variousfunctions (e.g., functions or tasks supporting communicationconfiguration for high pathloss operations).

The I/O controller 1050 may manage input and output signals for thedevice 1005. The I/O controller 1050 may also manage peripherals notintegrated into the device 1005. In some cases, the I/O controller 1050may represent a physical connection or port to an external peripheral.In some cases, the I/O controller 1050 may utilize an operating systemsuch as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, oranother known operating system. In other cases, the I/O controller 1050may represent or interact with a modem, a keyboard, a mouse, atouchscreen, or a similar device. In some cases, the I/O controller 1050may be implemented as part of a processor. In some cases, a user mayinteract with the device 1005 via the I/O controller 1050 or viahardware components controlled by the I/O controller 1050.

The code 1035 may include instructions to implement aspects of thepresent disclosure, including instructions to support wirelesscommunications. The code 1035 may be stored in a non-transitorycomputer-readable medium such as system memory or other type of memory.In some cases, the code 1035 may not be directly executable by theprocessor 1040 but may cause a computer (e.g., when compiled andexecuted) to perform functions described herein.

FIG. 11 shows a diagram of a system 1100 including a device 1105 thatsupports communication configuration for high pathloss operations inaccordance with one or more aspects of the present disclosure. Thedevice 1105 may be an example of or include the components of device705, device 805, or a base station 105 as described herein. The device1105 may include components for bi-directional voice and datacommunications including components for transmitting and receivingcommunications, including a pathloss mode manager 1110, a networkcommunications manager 1115, a transceiver 1120, an antenna 1125, memory1130, a processor 1140, and an inter-station communications manager1145. These components may be in electronic communication via one ormore buses (e.g., bus 1155).

The pathloss mode manager 1110 may identify a communicationconfiguration for a second wireless device, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with a first pathloss mode, transmit an indication of thecommunication configuration to the second wireless device for operatingin the first pathloss mode, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode, andcommunicate with the second wireless device operating in the firstpathloss mode via the BWP based on the one or more configurationparameters for the BWP.

Additionally, or alternatively, the pathloss mode manager 1110 may alsoreceive, from a second wireless device, an indication of a communicationconfiguration for operating in a first pathloss mode, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with the first pathloss mode and communicate with the secondwireless device in the first pathloss mode via the BWP based on the oneor more configuration parameters for the BWP, where a first length of afirst TTI associated with the first pathloss mode is different from asecond length of a second TTI associated with a second pathloss mode.

Additionally, or alternatively, the pathloss mode manager 1110 may alsoidentify a communication configuration for a second wireless device, thecommunication configuration including one or more configurationparameters for a BWP associated with a first pathloss mode andcommunicate with the second wireless device via the BWP according to thefirst pathloss mode based on the one or more configuration parameters,where a first length of a first TTI associated with the first pathlossmode is different from a second length of a second TTI associated with asecond pathloss mode.

Network communications manager 1115 may manage communications with thecore network (e.g., via one or more wired backhaul links). For example,the network communications manager 1115 may manage the transfer of datacommunications for client devices, such as one or more UEs 115.

Transceiver 1120 may communicate bi-directionally, via one or moreantennas, wired, or wireless links as described above. For example, thetransceiver 1120 may represent a wireless transceiver and maycommunicate bi-directionally with another wireless transceiver. Thetransceiver 1120 may also include a modem to modulate the packets andprovide the modulated packets to the antennas for transmission, and todemodulate packets received from the antennas.

In some cases, the device 1105 may include a single antenna 1125, or thedevice 1105 may have more than one antenna 1125, which may be capable ofconcurrently transmitting or receiving multiple wireless transmissions.

The memory 1130 may include RAM, ROM, or a combination thereof. Thememory 1130 may store computer-readable code 1135 including instructionsthat, when executed by a processor (e.g., the processor 1140) cause thedevice to perform various functions described herein. In some cases, thememory 1130 may contain, among other things, a BIOS which may controlbasic hardware or software operation such as the interaction withperipheral components or devices.

The processor 1140 may include an intelligent hardware device, (e.g., ageneral-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, anFPGA, a programmable logic device, a discrete gate or transistor logiccomponent, a discrete hardware component, or any combination thereof).In some cases, the processor 1140 may be configured to operate a memoryarray using a memory controller. In other cases, a memory controller maybe integrated into the processor 1140. The processor 1140 may beconfigured to execute computer-readable instructions stored in a memory(e.g., the memory 1130) to cause the device 1105 to perform variousfunctions (e.g., functions or tasks supporting communicationconfiguration for high pathloss operations).

Inter-station communications manager 1145 may manage communications withother base station 105, and may include a controller or scheduler forcontrolling communications with UEs 115 in cooperation with other basestations 105. For example, the inter-station communications manager 1145may coordinate scheduling for transmissions to UEs 115 for variousinterference mitigation techniques such as beamforming or jointtransmission. In some examples, inter-station communications manager1145 may provide an X2 interface within an LTE/LTE-A wirelesscommunication network technology to provide communication between basestations 105.

The code 1135 may include instructions to implement aspects of thepresent disclosure, including instructions to support wirelesscommunications. The code 1135 may be stored in a non-transitorycomputer-readable medium such as system memory or other type of memory.In some cases, the code 1135 may not be directly executable by theprocessor 1140 but may cause a computer (e.g., when compiled andexecuted) to perform functions described herein.

FIG. 12 shows a flowchart illustrating a method 1200 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The operations ofmethod 1200 may be implemented by a UE 115 or base station 105 or itscomponents as described herein. For example, the operations of method1200 may be performed by a pathloss mode manager as described withreference to FIGS. 7 through 11 . In some examples, a UE or base stationmay execute a set of instructions to control the functional elements ofthe UE or base station to perform the functions described below.Additionally or alternatively, a UE or base station may perform aspectsof the functions described below using special-purpose hardware.

At 1205, the UE or base station may identify a communicationconfiguration for a second wireless device, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with a first pathloss mode. The operations of 1205 may beperformed according to the methods described herein. In some examples,aspects of the operations of 1205 may be performed by a configurationmanager as described with reference to FIGS. 7 through 11 .

At 1210, the UE or base station may transmit an indication of thecommunication configuration to the second wireless device for operatingin the first pathloss mode, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode. Theoperations of 1210 may be performed according to the methods describedherein. In some examples, aspects of the operations of 1210 may beperformed by a configuration transmitter as described with reference toFIGS. 7 through 11 .

At 1215, the UE or base station may communicate with the second wirelessdevice operating in the first pathloss mode via the BWP based on the oneor more configuration parameters for the BWP, where at least a portionof the one or more configuration parameters are the same as one or moreconfiguration parameters for a second BWP associated with the secondpathloss mode. For example, a processing time parameter, a transmissionbeam parameter, a latency parameter, or any combination thereof of theone or more configuration parameters may be the same as a correspondingparameter of the one or more configuration parameters for the secondBWP. The operations of 1215 may be performed according to the methodsdescribed herein. In some examples, aspects of the operations of 1215may be performed by a communications component as described withreference to FIGS. 7 through 11 .

FIG. 13 shows a flowchart illustrating a method 1300 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The operations ofmethod 1300 may be implemented by a UE 115 or base station 105 or itscomponents as described herein. For example, the operations of method1300 may be performed by a pathloss mode manager as described withreference to FIGS. 7 through 11 . In some examples, a UE or base stationmay execute a set of instructions to control the functional elements ofthe UE or base station to perform the functions described below.Additionally or alternatively, a UE or base station may perform aspectsof the functions described below using special-purpose hardware.

At 1305, the UE or base station may identify a communicationconfiguration for a second wireless device, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with a first pathloss mode. The operations of 1305 may beperformed according to the methods described herein. In some examples,aspects of the operations of 1305 may be performed by a configurationmanager as described with reference to FIGS. 7 through 11 .

At 1310, the UE or base station may operate in the first pathloss modefor communications with the second wireless device. The operations of1310 may be performed according to the methods described herein. In someexamples, aspects of the operations of 1310 may be performed by anoperations module as described with reference to FIGS. 7 through 11 .

At 1315, the UE or base station may transmit an indication of thecommunication configuration to the second wireless device for operatingin the first pathloss mode, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode. Theoperations of 1315 may be performed according to the methods describedherein. In some examples, aspects of the operations of 1315 may beperformed by a configuration transmitter as described with reference toFIGS. 7 through 11 .

At 1320, the UE or base station may communicate with the second wirelessdevice operating in the first pathloss mode via the BWP based on the oneor more configuration parameters for the BWP, where at least a portionof the one or more configuration parameters are the same as one or moreconfiguration parameters for a second BWP associated with the secondpathloss mode. For example, a processing time parameter, a transmissionbeam parameter, a latency parameter, or any combination thereof of theone or more configuration parameters may be the same as a correspondingparameter of the one or more configuration parameters for the secondBWP. The operations of 1320 may be performed according to the methodsdescribed herein. In some examples, aspects of the operations of 1320may be performed by a communications component as described withreference to FIGS. 7 through 11 .

At 1325, the UE or base station may transmit the indication of thecommunication configuration to the second wireless device for the secondwireless device to communicate via the BWP based on operating in thefirst pathloss mode. The operations of 1325 may be performed accordingto the methods described herein. In some examples, aspects of theoperations of 1325 may be performed by a configuration transmitter asdescribed with reference to FIGS. 7 through 11 .

FIG. 14 shows a flowchart illustrating a method 1400 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The operations ofmethod 1400 may be implemented by a UE 115 or base station 105 or itscomponents as described herein. For example, the operations of method1400 may be performed by a pathloss mode manager as described withreference to FIGS. 7 through 11 . In some examples, a UE or base stationmay execute a set of instructions to control the functional elements ofthe UE or base station to perform the functions described below.Additionally or alternatively, a UE or base station may perform aspectsof the functions described below using special-purpose hardware.

At 1405, the UE or base station may identify a communicationconfiguration for a second wireless device, the communicationconfiguration indicating one or more configuration parameters for a BWPassociated with a first pathloss mode. The operations of 1405 may beperformed according to the methods described herein. In some examples,aspects of the operations of 1405 may be performed by a configurationmanager as described with reference to FIGS. 7 through 11 .

At 1410, the UE or base station may operate in the first pathloss modefor communications with the second wireless device. The operations of1410 may be performed according to the methods described herein. In someexamples, aspects of the operations of 1410 may be performed by anoperations module as described with reference to FIGS. 7 through 11 .

At 1415, the UE or base station may transmit an indication of thecommunication configuration to the second wireless device for operatingin the first pathloss mode, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode. Theoperations of 1415 may be performed according to the methods describedherein. In some examples, aspects of the operations of 1415 may beperformed by a configuration transmitter as described with reference toFIGS. 7 through 11 .

At 1420, the UE or base station may communicate with the second wirelessdevice operating in the first pathloss mode via the BWP based on the oneor more configuration parameters for the BWP, where at least a portionof the one or more configuration parameters are the same as one or moreconfiguration parameters for a second BWP associated with the secondpathloss mode. For example, a processing time parameter, a transmissionbeam parameter, a latency parameter, or any combination thereof of theone or more configuration parameters may be the same as a correspondingparameter of the one or more configuration parameters for the secondBWP. The operations of 1420 may be performed according to the methodsdescribed herein. In some examples, aspects of the operations of 1420may be performed by a communications component as described withreference to FIGS. 7 through 11 .

At 1425, the UE or base station may communicate with the second wirelessdevice via the BWP after a time duration indicated by the communicationconfiguration. The operations of 1425 may be performed according to themethods described herein. In some examples, aspects of the operations of1425 may be performed by a communications component as described withreference to FIGS. 7 through 11 .

FIG. 15 shows a flowchart illustrating a method 1500 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The operations ofmethod 1500 may be implemented by a UE 115 or base station 105 or itscomponents as described herein. For example, the operations of method1500 may be performed by a pathloss mode manager as described withreference to FIGS. 7 through 11 . In some examples, a UE or base stationmay execute a set of instructions to control the functional elements ofthe UE or base station to perform the functions described below.Additionally or alternatively, a UE or base station may perform aspectsof the functions described below using special-purpose hardware.

At 1505, the UE or base station may receive, from a second wirelessdevice, an indication of a communication configuration for operating ina first pathloss mode, the communication configuration indicating one ormore configuration parameters for a BWP associated with the firstpathloss mode. The operations of 1505 may be performed according to themethods described herein. In some examples, aspects of the operations of1505 may be performed by a configuration receiver as described withreference to FIGS. 7 through 11 .

At 1510, the UE or base station may communicate with the second wirelessdevice in the first pathloss mode via the BWP based on the one or moreconfiguration parameters for the BWP, where a first length of a firstTTI associated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode, and whereat least a portion of the one or more configuration parameters are thesame as one or more configuration parameters for a second BWP associatedwith the second pathloss mode. For example, a processing time parameter,a transmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters may be the same as acorresponding parameter of the one or more configuration parameters forthe second BWP. The operations of 1510 may be performed according to themethods described herein. In some examples, aspects of the operations of1510 may be performed by a communications component as described withreference to FIGS. 7 through 11 .

FIG. 16 shows a flowchart illustrating a method 1600 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The operations ofmethod 1600 may be implemented by a UE 115 or base station 105 or itscomponents as described herein. For example, the operations of method1600 may be performed by a pathloss mode manager as described withreference to FIGS. 7 through 11 . In some examples, a UE or base stationmay execute a set of instructions to control the functional elements ofthe UE or base station to perform the functions described below.Additionally or alternatively, a UE or base station may perform aspectsof the functions described below using special-purpose hardware.

At 1605, the UE or base station may receive, from a second wirelessdevice, an indication of a communication configuration for operating ina first pathloss mode, the communication configuration indicating one ormore configuration parameters for a BWP associated with the firstpathloss mode. The operations of 1605 may be performed according to themethods described herein. In some examples, aspects of the operations of1605 may be performed by a configuration receiver as described withreference to FIGS. 7 through 11 .

At 1610, the UE or base station may identify an IE associated with theBWP in the one or more configuration parameters, the IE indicating thatthe BWP is configured for the first pathloss mode. The operations of1610 may be performed according to the methods described herein. In someexamples, aspects of the operations of 1610 may be performed by an IEcomponent as described with reference to FIGS. 7 through 11 .

At 1615, the UE or base station may communicate with the second wirelessdevice in the first pathloss mode via the BWP based on the one or moreconfiguration parameters for the BWP, where a first length of a firstTTI associated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode, and whereat least a portion of the one or more configuration parameters are thesame as one or more configuration parameters for a second BWP associatedwith the second pathloss mode. For example, a processing time parameter,a transmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters may be the same as acorresponding parameter of the one or more configuration parameters forthe second BWP. The operations of 1615 may be performed according to themethods described herein. In some examples, aspects of the operations of1615 may be performed by a communications component as described withreference to FIGS. 7 through 11 .

FIG. 17 shows a flowchart illustrating a method 1700 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The operations ofmethod 1700 may be implemented by a UE 115 or base station 105 or itscomponents as described herein. For example, the operations of method1700 may be performed by a pathloss mode manager as described withreference to FIGS. 7 through 11 . In some examples, a UE or base stationmay execute a set of instructions to control the functional elements ofthe UE or base station to perform the functions described below.Additionally or alternatively, a UE or base station may perform aspectsof the functions described below using special-purpose hardware.

At 1705, the UE or base station may identify a communicationconfiguration for a second wireless device, the communicationconfiguration including one or more configuration parameters for a BWPassociated with a first pathloss mode. The operations of 1705 may beperformed according to the methods described herein. In some examples,aspects of the operations of 1705 may be performed by a configurationmanager as described with reference to FIGS. 7 through 11 .

At 1710, the UE or base station may communicate with the second wirelessdevice via the BWP according to the first pathloss mode based on the oneor more configuration parameters, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode, and whereat least a portion of the one or more configuration parameters are thesame as one or more configuration parameters for a second BWP associatedwith the second pathloss mode. For example, a processing time parameter,a transmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters may be the same as acorresponding parameter of the one or more configuration parameters forthe second BWP. The operations of 1710 may be performed according to themethods described herein. In some examples, aspects of the operations of1710 may be performed by a communications component as described withreference to FIGS. 7 through 11 .

FIG. 18 shows a flowchart illustrating a method 1800 that supportscommunication configuration for high pathloss operations in accordancewith one or more aspects of the present disclosure. The operations ofmethod 1800 may be implemented by a UE 115 or base station 105 or itscomponents as described herein. For example, the operations of method1800 may be performed by a pathloss mode manager as described withreference to FIGS. 7 through 11 . In some examples, a UE or base stationmay execute a set of instructions to control the functional elements ofthe UE or base station to perform the functions described below.Additionally or alternatively, a UE or base station may perform aspectsof the functions described below using special-purpose hardware.

At 1805, the UE or base station may identify a communicationconfiguration for a second wireless device, the communicationconfiguration including one or more configuration parameters for a BWPassociated with a first pathloss mode. The operations of 1805 may beperformed according to the methods described herein. In some examples,aspects of the operations of 1805 may be performed by a configurationmanager as described with reference to FIGS. 7 through 11 .

At 1810, the UE or base station may configure the BWP for the secondwireless device for communications in the first pathloss mode based onthe one or more configuration parameters for the BWP. The operations of1810 may be performed according to the methods described herein. In someexamples, aspects of the operations of 1810 may be performed by a BWPmanager as described with reference to FIGS. 7 through 11 .

At 1815, the UE or base station may configure the second BWP for thesecond wireless device for communications in the second pathloss modebased on the one or more configuration parameters for the second BWP.The operations of 1815 may be performed according to the methodsdescribed herein. In some examples, aspects of the operations of 1815may be performed by a BWP manager as described with reference to FIGS. 7through 11 .

At 1820, the UE or base station may communicate with the second wirelessdevice via the BWP according to the first pathloss mode based on the oneor more configuration parameters, where a first length of a first TTIassociated with the first pathloss mode is different from a secondlength of a second TTI associated with a second pathloss mode, and whereat least a portion of the one or more configuration parameters are thesame as one or more configuration parameters for a second BWP associatedwith the second pathloss mode. For example, a processing time parameter,a transmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters may be the same as acorresponding parameter of the one or more configuration parameters forthe second BWP. The operations of 1820 may be performed according to themethods described herein. In some examples, aspects of the operations of1820 may be performed by a communications component as described withreference to FIGS. 7 through 11 .

It should be noted that the methods described herein describe possibleimplementations, and that the operations and the steps may be rearrangedor otherwise modified and that other implementations are possible.Further, aspects from two or more of the methods may be combined.

Example 1: A method for wireless communications at a first wirelessdevice, comprising: determining a communication configuration for asecond wireless device, the communication configuration indicating oneor more configuration parameters for a BWP, a length of an SSB, or acombination thereof, associated with a first mode; transmitting anindication of the communication configuration to the second wirelessdevice for operating in the first mode, wherein a first length of afirst TTI associated with the first mode is different from a secondlength of a second TTI associated with a second mode; and communicatingwith the second wireless device operating in the first mode based atleast in part on the one or more configuration parameters.

Example 2: The method of example 1, wherein: the first mode is a firstpathloss mode; and the second mode is a second pathloss mode.

Example 3: The method of example 2, wherein the first pathloss mode is ahigh pathloss mode and the second pathloss mode is a normal mode.

Example 4: The method of example 1 to 3, further comprising: operatingin the first mode for communications with the second wireless device;and transmitting the indication of the communication configuration tothe second wireless device for the second wireless device to communicatebased at least in part on operating in the first mode.

Example 5: The method of example 4, further comprising: communicatingwith the second wireless device after a time duration indicated by thecommunication configuration.

Example 6: The method of example 1 to 5, further comprising:transmitting an information element for at least one of the BWP, theSSB, or the combination thereof, in the one or more configurationparameters, the information element indicating that at least one of theBWP, the SSB, or the combination thereof, is configured for the firstmode.

Example 7: The method of example 6, wherein the one or moreconfiguration parameters comprises at least one of control resource setinformation, channel state information resources, sounding referencesignal resources, a TTI duration, tracking reference signal information,or any combination thereof associated with at least one of the BWP, theSSB, or the combination thereof.

Example 8: The method of example 6, wherein the information elementcomprises a single bit field.

Example 9: The method of example 6, wherein: at least a portion of theone or more configuration parameters are the same as one or moreconfiguration parameters for at least one of a second BWP, a secondlength of an SSB, or a combination thereof, associated with the secondmode; and a processing time parameter, a transmission beam parameter, alatency parameter, or any combination thereof of the one or moreconfiguration parameters is the same as a corresponding parameter of theone or more configuration parameters for at least one of the second BWP,the second SSB, or the combination thereof.

Example 10: The method of claims 1 to 9, further comprising:transmitting the indication of the communication configuration via RRCsignaling or DCI or both.

Example 11: The method of example 1 to 10, further comprising:configuring the BWP for the second wireless device for communications inthe first mode, the BWP comprising one of a downlink BWP or an uplinkBWP, wherein the configuration parameters are for the BWP; andconfiguring a second BWP for the second wireless device forcommunications in the second mode.

Example 12: The method of example 1 to 11, wherein the first wirelessdevice and the second wireless device are IAB nodes operating in an IABnetwork.

Example 13: The method of example 1 to 12, wherein the first length ofthe first TTI associated with the first mode is longer than the secondlength of the second TTI associated with the second mode.

Example 14: A method for wireless communications at a first wirelessdevice, comprising: receiving, from a second wireless device, anindication of a communication configuration for operating in a firstmode, the communication configuration indicating one or moreconfiguration parameters for at least one of a BWP, a length of an SSB,or a combination thereof, associated with the first mode; andcommunicating with the second wireless device in the first mode based atleast in part on the one or more configuration parameters, wherein afirst length of a first TTI associated with the first mode is differentfrom a second length of a second TTI associated with a second mode.

Example 15: The method of example 14, wherein: the first mode is a firstpathloss mode; and the second mode is a second pathloss mode.

Example 16: The method of example 15, wherein the first pathloss mode isa high pathloss mode and the second pathloss mode is a normal mode.

Example 17: The method of examples 14 to 16, further comprising:receiving the indication of the communication configuration tocommunicate based at least in part on the first wireless deviceoperating in the first mode; and communicating after a time durationindicated by the communication configuration.

Example 18: The method of examples 14 to 17, further comprising:identifying an information element associated with at least one of theBWP, the SSB, or the combination thereof in the one or moreconfiguration parameters, the information element indicating that the atleast one of the BWP, the SSB, or the combination thereof is configuredfor the first mode.

Example 19: The method of example 18, wherein: the one or moreconfiguration parameters comprises at least one of control resource setinformation, channel state information resources, sounding referencesignal resources, a TTI duration, tracking reference signal information,or any combination thereof associated with the at least one of the BWP,the SSB, or the combination thereof; and the information elementcomprises a single bit field.

Example 20: The method of example 18, wherein: at least one of the oneor more configuration parameters are the same as one or moreconfiguration parameters for at least one of a second BWP, a second SSB,or a combination thereof associated with the second mode; and wherein aprocessing time parameter, a transmission beam parameter, a latencyparameter, or any combination thereof of the one or more configurationparameters is the same as a corresponding parameter of one or moreconfiguration parameters for the at least one of the second BWP, thesecond SSB, or the combination thereof.

Example 21: The method of examples 14 to 20, further comprising:receiving the indication of the communication configuration via RRCsignaling or DCI or both.

Example 22: The method of examples 14 to 21, further comprising:configuring the BWP for the first wireless device for communications inthe first mode, the BWP comprising one of a downlink BWP or an uplinkBWP, wherein the configuration parameters are for the BWP; andconfiguring a second BWP for the first wireless device forcommunications in the second mode.

Example 23: The method of examples 14 to 22, wherein the first wirelessdevice and the second wireless device are IAB nodes operating in an IABnetwork.

Example 24: The method of example 14 to 23, wherein the first length ofthe first TTI associated with the first mode is longer than the secondlength of the second TTI associated with the second mode.

Example 25: A method for wireless communications at a first wirelessdevice, comprising: communicating with a second wireless deviceaccording to a current mode; determining a communication configurationfor the second wireless device, the communication configurationcomprising one or more configuration parameters for at least one of aBWP, a length of an SSB, or a combination thereof, associated with afirst mode; and communicating with the second wireless device accordingto the first mode based at least in part on the one or moreconfiguration parameters, wherein a first length of a first TTIassociated with the first mode is different from a second length of asecond TTI associated with a second mode.

Example 26: The method of example 25, wherein the determining furthercomprises: monitoring whether the second wireless device moves to thefirst mode.

Example 27. The method of examples 25 and 26, further comprising:entering the first mode for communications with the second wirelessdevice; and communicating with the second wireless device via the atleast one of the BWP, the SSB, or the combination thereof after a timeduration after entering the first mode.

Example 28: The method of examples 25 to 27, wherein the one or moreconfiguration parameters comprise at least one of control resource setinformation, channel state information resources, sounding referencesignal resources, a TTI duration, tracking reference signal information,or any combination thereof associated with the BWP, the SSB, or thecombination.

Example 29: The method of examples 25 to 28, wherein at least one of theone or more configuration parameters are the same as one or moreconfiguration parameters for at least one of a second BWP, a second SSB,or a combination thereof associated with the second mode.

Example 30: The method of example 29, wherein a processing timeparameter, a transmission beam parameter, a latency parameter, or anycombination thereof of the one or more configuration parameters is thesame as a corresponding parameter of the one or more configurationparameters for the second BWP, the second SSB, or the combination.

Example 31: The method of example 29, further comprising: configuringthe BWP, SSB, or the combination for the second wireless device forcommunications in the first mode based at least in part on the one ormore configuration parameters for the BWP, the SSB, or the combination;and configuring the second BWP, the SSB, or the combination for thesecond wireless device for communications in the second mode based atleast in part on the one or more configuration parameters for the secondBWP, the SSB, or the combination.

Example 32: The method of claims 25 to 31, wherein the first wirelessdevice and the second wireless device are IAB nodes operating in an IABnetwork.

Example 33: The method of examples 25 to 32, wherein the first mode is ahigh pathloss mode and the second mode is a normal mode.

Example 34: The method of examples 25 to 33, wherein the first length ofthe first TTI associated with the first mode is longer than the secondlength of the second TTI associated with the second mode.

Example 35: An apparatus for wireless communications at a first wirelessdevice, comprising: a processor; and memory coupled to the processor,the processor and memory configured to: determine a communicationconfiguration for a second wireless device, the communicationconfiguration indicating one or more configuration parameters for atleast one of a BWP, a length of an SSB, or a combination thereof,associated with a first mode; transmit an indication of thecommunication configuration to the second wireless device for operatingin the first mode, wherein a first length of a first TTI associated withthe first mode is different from a second length of a second TTIassociated with a second mode; and communicate with the second wirelessdevice operating in the first mode based at least in part on the one ormore configuration parameters.

Example 36: An apparatus for wireless communications comprising aprocessor; and memory coupled to the processor, the processor and memoryconfigured to perform a method of any of examples 14 to 24.

Example 37: An apparatus for wireless communications comprising aprocessor; and memory coupled to the processor, the processor and memoryconfigured to perform a method of any of examples 25 to 34.

Example 38: An apparatus comprising at least one means for performing amethod of any of examples 1 to 13.

Example 39: An apparatus comprising at least one means for performing amethod of any of examples 14 to 24.

Example 40: An apparatus comprising at least one means for performing amethod of any of examples 25 to 34.

Example 41: A non-transitory computer-readable medium storing code forwireless communications, the code comprising instructions executable bya processor to perform a method of any of examples 1 to 13.

Example 42: A non-transitory computer-readable medium storing code forwireless communications, the code comprising instructions executable bya processor to perform a method of any of examples 14 to 24.

Example 43: A non-transitory computer-readable medium storing code forwireless communications, the code comprising instructions executable bya processor to perform a method of any of examples 25 to 34.

Techniques described herein may be used for various wirelesscommunications systems such as CDMA, TDMA, FDMA, OFDMA, single carrierfrequency division multiple access (SC-FDMA), and other systems. A CDMAsystem may implement a radio technology such as CDMA2000, UniversalTerrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95,and IS-856 standards. IS-2000 Releases may be commonly referred to asCDMA2000 1×, 1×, etc. IS-856 (TIA-856) is commonly referred to asCDMA2000 1×EV-DO, High Rate Packet Data (HRPD), etc. UTRA includesWideband CDMA (WCDMA) and other variants of CDMA. A TDMA system mayimplement a radio technology such as Global System for MobileCommunications (GSM).

An OFDMA system may implement a radio technology such as Ultra MobileBroadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical andElectronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of Universal MobileTelecommunications System (UMTS). LTE, LTE-A, and LTE-A Pro are releasesof UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR,and GSM are described in documents from the organization named “3rdGeneration Partnership Project” (3GPP). CDMA2000 and UMB are describedin documents from an organization named “3rd Generation PartnershipProject 2” (3GPP2). The techniques described herein may be used for thesystems and radio technologies mentioned herein as well as other systemsand radio technologies. While aspects of an LTE, LTE-A, LTE-A Pro, or NRsystem may be described for purposes of example, and LTE, LTE-A, LTE-APro, or NR terminology may be used in much of the description, thetechniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro,or NR applications.

A macro cell may cover a relatively large geographic area (e.g., severalkilometers in radius) and may allow unrestricted access by UEs withservice subscriptions with the network provider. A small cell may beassociated with a lower-powered base station, as compared with a macrocell, and a small cell may operate in the same or different (licensed,unlicensed, etc.) frequency bands as macro cells. Small cells mayinclude pico cells, femto cells, and micro cells according to variousexamples. A pico cell, for example, may cover a small geographic areaand may allow unrestricted access by UEs with service subscriptions withthe network provider. A femto cell may also cover a small geographicarea (e.g., a home) and may provide restricted access by UEs having anassociation with the femto cell (e.g., UEs in a closed subscriber group(CSG), UEs for users in the home, and the like). An eNB for a macro cellmay be referred to as a macro eNB. An eNB for a small cell may bereferred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB.An eNB may support one or multiple (e.g., two, three, four, and thelike) cells, and may also support communications using one or multiplecomponent carriers.

The wireless communications systems described herein may supportsynchronous or asynchronous operation. For synchronous operation, thebase stations may have similar frame timing, and transmissions fromdifferent base stations may be approximately aligned in time. Forasynchronous operation, the base stations may have different frametiming, and transmissions from different base stations may not bealigned in time. The techniques described herein may be used for eithersynchronous or asynchronous operations.

Information and signals described herein may be represented using any ofa variety of different technologies and techniques. For example, data,instructions, commands, information, signals, bits, symbols, and chipsthat may be referenced throughout the description may be represented byvoltages, currents, electromagnetic waves, magnetic fields or particles,optical fields or particles, or any combination thereof.

The various illustrative blocks and modules described in connection withthe disclosure herein may be implemented or performed with ageneral-purpose processor, a DSP, an ASIC, an FPGA, or otherprogrammable logic device, discrete gate or transistor logic, discretehardware components, or any combination thereof designed to perform thefunctions described herein. A general-purpose processor may be amicroprocessor, but in the alternative, the processor may be anyconventional processor, controller, microcontroller, or state machine. Aprocessor may also be implemented as a combination of computing devices(e.g., a combination of a DSP and a microprocessor, multiplemicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other such configuration).

The functions described herein may be implemented in hardware, softwareexecuted by a processor, firmware, or any combination thereof. Ifimplemented in software executed by a processor, the functions may bestored on or transmitted over as one or more instructions or code on acomputer-readable medium. Other examples and implementations are withinthe scope of the disclosure and appended claims. For example, due to thenature of software, functions described herein can be implemented usingsoftware executed by a processor, hardware, firmware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations.

Computer-readable media includes both non-transitory computer storagemedia and communication media including any medium that facilitatestransfer of a computer program from one place to another. Anon-transitory storage medium may be any available medium that can beaccessed by a general purpose or special purpose computer. By way ofexample, and not limitation, non-transitory computer-readable media mayinclude RAM, ROM, electrically erasable programmable ROM (EEPROM), flashmemory, compact disk (CD) ROM or other optical disk storage, magneticdisk storage or other magnetic storage devices, or any othernon-transitory medium that can be used to carry or store desired programcode means in the form of instructions or data structures and that canbe accessed by a general-purpose or special-purpose computer, or ageneral-purpose or special-purpose processor. Also, any connection isproperly termed a computer-readable medium. For example, if the softwareis transmitted from a website, server, or other remote source using acoaxial cable, fiber optic cable, twisted pair, digital subscriber line(DSL), or wireless technologies such as infrared, radio, and microwave,then the coaxial cable, fiber optic cable, twisted pair, DSL, orwireless technologies such as infrared, radio, and microwave areincluded in the definition of medium. Disk and disc, as used herein,include CD, laser disc, optical disc, digital versatile disc (DVD),floppy disk and Blu-ray disc where disks usually reproduce datamagnetically, while discs reproduce data optically with lasers.Combinations of the above are also included within the scope ofcomputer-readable media.

As used herein, including in the claims, “or” as used in a list of items(e.g., a list of items prefaced by a phrase such as “at least one of” or“one or more of”) indicates an inclusive list such that, for example, alist of at least one of A, B, or C means A or B or C or AB or AC or BCor ABC (i.e., A and B and C). Also, as used herein, the phrase “basedon” shall not be construed as a reference to a closed set of conditions.For example, an exemplary step that is described as “based on conditionA” may be based on both a condition A and a condition B withoutdeparting from the scope of the present disclosure. In other words, asused herein, the phrase “based on” shall be construed in the same manneras the phrase “based at least in part on.”

In the appended figures, similar components or features may have thesame reference label. Further, various components of the same type maybe distinguished by following the reference label by a dash and a secondlabel that distinguishes among the similar components. If just the firstreference label is used in the specification, the description isapplicable to any one of the similar components having the same firstreference label irrespective of the second reference label, or othersubsequent reference label.

The description set forth herein, in connection with the appendeddrawings, describes example configurations and does not represent allthe examples that may be implemented or that are within the scope of theclaims. The term “exemplary” used herein means “serving as an example,instance, or illustration,” and not “preferred” or “advantageous overother examples.” The detailed description includes specific details forthe purpose of providing an understanding of the described techniques.These techniques, however, may be practiced without these specificdetails. In some instances, well-known structures and devices are shownin block diagram form in order to avoid obscuring the concepts of thedescribed examples.

The description herein is provided to enable a person skilled in the artto make or use the disclosure. Various modifications to the disclosurewill be readily apparent to those skilled in the art, and the genericprinciples defined herein may be applied to other variations withoutdeparting from the scope of the disclosure. Thus, the disclosure is notlimited to the examples and designs described herein, but is to beaccorded the broadest scope consistent with the principles and novelfeatures disclosed herein.

What is claimed is:
 1. An apparatus for wireless communications at afirst wireless device, comprising: a processor; and memory coupled withthe processor, the processor configured to: transmit, to a secondwireless device, an indication of a communication configurationassociated with a first pathloss mode, the first pathloss modeassociated with a pathloss value exceeding a threshold, thecommunication configuration indicating one or more configurationparameters for a bandwidth part associated with the first pathloss mode;and communicate with the second wireless device according to the firstpathloss mode based at least in part on the one or more configurationparameters.
 2. The apparatus of claim 1, wherein the first pathloss modeis associated with a higher pathloss relative to a second pathloss mode,and wherein the second pathloss mode is associated with a pathloss valuebeing below the threshold.
 3. The apparatus of claim 1, wherein theprocessor is further configured to: operate in the first pathloss modefor communications; and transmit the indication of the communicationconfiguration to the second wireless device for the second wirelessdevice to communicate based at least in part on operation of the firstwireless device in the first pathloss mode.
 4. The apparatus of claim 3,wherein the processor is further configured to: communicate after a timeduration indicated by the communication configuration.
 5. The apparatusof claim 1, wherein the processor is further configured to: transmit aninformation element for the bandwidth part in the one or moreconfiguration parameters, the information element indicating that thebandwidth part is configured for the first pathloss mode.
 6. Theapparatus of claim 5, wherein the one or more configuration parameterscomprises at least one of control resource set information, channelstate information resources, sounding reference signal resources, atransmission time interval duration, tracking reference signalinformation, or any combination thereof associated with the bandwidthpart.
 7. The apparatus of claim 5, wherein the information elementcomprises a bit field.
 8. The apparatus of claim 5, wherein at least aportion of the one or more configuration parameters for the bandwidthpart is the same as one or more second configuration parameters for asecond bandwidth part associated with a second pathloss mode, andwherein a processing time parameter, a transmission beam parameter, alatency parameter, or any combination thereof of the one or moreconfiguration parameters for the bandwidth part is the same as acorresponding parameter of the one or more second configurationparameters for the second bandwidth part.
 9. The apparatus of claim 1,wherein the processor is further configured to: transmit the indicationof the communication configuration via radio resource control signaling,downlink control information, or both.
 10. The apparatus of claim 1,wherein the apparatus further comprises an antenna, and wherein thefirst wireless device and the second wireless device are integratedaccess and backhaul (IAB) nodes in an TAB network.
 11. The apparatus ofclaim 1, wherein a first length of a first transmission time intervalassociated with the first pathloss mode is longer than a second lengthof a second transmission time interval associated with a second pathlossmode.
 12. An apparatus for wireless communications at a first wirelessdevice, comprising: a processor; and memory coupled with the processor,the processor is configured to: receive, from a second wireless device,an indication of a communication configuration associated with a firstpathloss mode, the first pathloss mode associated with a pathloss valueexceeding a threshold, wherein the communication configuration indicatesone or more configuration parameters for a bandwidth part associatedwith the first pathloss mode; and communicate with the second wirelessdevice according to the first pathloss mode based at least in part onthe one or more configuration parameters.
 13. The apparatus of claim 12,wherein the first pathloss mode is associated with a higher pathlossrelative to a second pathloss mode, and wherein the second pathloss modeis associated with a pathloss value being below the threshold.
 14. Theapparatus of claim 12, wherein the processor is further configured to:receive the indication of the communication configuration tocommunicate; and communicate after a time duration indicated by thecommunication configuration.
 15. The apparatus of claim 12, wherein theprocessor is further configured to: identify an information elementassociated with the bandwidth part in the one or more configurationparameters, the information element indicating that the bandwidth partis configured for the first pathloss mode.
 16. The apparatus of claim15, wherein the one or more configuration parameters comprise at leastone of control resource set information, channel state informationresources, sounding reference signal resources, a transmission timeinterval duration, tracking reference signal information, or anycombination thereof associated with the bandwidth part, and wherein theinformation element comprises a single bit field.
 17. The apparatus ofclaim 15, wherein at least one of the one or more configurationparameters for the bandwidth part is the same as one or more secondconfiguration parameters for a second bandwidth part associated with asecond pathloss mode; and wherein a processing time parameter, atransmission beam parameter, a latency parameter, or any combinationthereof of the one or more configuration parameters for the bandwidthpart is the same as a corresponding parameter of the one or more secondconfiguration parameters for the second bandwidth part.
 18. Theapparatus of claim 12, wherein the processor is further configured to:receive the indication of the communication configuration via radioresource control (RRC) signaling, downlink control information (DCI), orboth.
 19. The apparatus of claim 12, wherein the apparatus furthercomprises an antenna, and wherein the first wireless device and thesecond wireless device are integrated access and backhaul (IAB) nodes inan TAB network.
 20. The apparatus of claim 12, wherein a first length ofa first transmission time interval associated with the first pathlossmode is longer than a second length of a second transmission timeinterval associated with a second pathloss mode.
 21. An apparatus forwireless communications at a first wireless device, comprising: aprocessor; and memory coupled with the processor, the processorconfigured to: transmit, to a second wireless device, an indication of acommunication configuration associated with a first pathloss mode,wherein a first length of a first transmission time interval associatedwith the first pathloss mode is different from a second length of asecond transmission time interval associated with a second pathlossmode; and communicate with the second wireless device according to thefirst pathloss mode based at least in part on the communicationconfiguration.
 22. The apparatus of claim 21, wherein the communicationconfiguration indicates one or more configuration parameters for asynchronization signal block associated with the first pathloss mode.23. The apparatus of claim 22, wherein the processor is furtherconfigured to: transmit an information element for the synchronizationsignal block in the one or more configuration parameters indicating thatthe synchronization signal block is configured for the first pathlossmode.
 24. The apparatus of claim 21, wherein the apparatus furthercomprises an antenna, and wherein the first pathloss mode is a highpathloss mode associated with a pathloss value exceeding a threshold andthe second pathloss mode is a normal mode associated with a pathlossvalue being below the threshold.
 25. The apparatus of claim 21, whereinthe processor is further configured to: operate in the first pathlossmode for communications; and transmit the indication of thecommunication configuration to the second wireless device for the secondwireless device to communicate based at least in part on operation ofthe first wireless device in the first pathloss mode.
 26. The apparatusof claim 25, wherein the processor is further configured to: communicatewith the second wireless device after a time duration indicated by thecommunication configuration.
 27. An apparatus for wirelesscommunications at a first wireless device, comprising: a processor; andmemory coupled with the processor, the processor configured to: receive,from a second wireless device, an indication of a communicationconfiguration associated with a first pathloss mode; and communicatewith the second wireless device according to the first pathloss modebased at least in part on the communication configuration, wherein afirst length of a first transmission time interval associated with thefirst pathloss mode is different from a second length of a secondtransmission time interval associated with a second pathloss mode. 28.The apparatus of claim 27, wherein the communication configurationindicates one or more configuration parameters for a synchronizationsignal block associated with the first pathloss mode.
 29. The apparatusof claim 27, wherein the apparatus further comprises an antenna, andwherein the first pathloss mode is a high pathloss mode associated witha pathloss value exceeding a threshold and the second pathloss mode is anormal mode associated a pathloss value being below the threshold. 30.The apparatus of claim 27, wherein the processor is further configuredto: receive the indication of the communication configuration tocommunicate; and communicate after time duration indicated by thecommunication configuration.
 31. An apparatus for wirelesscommunications at a first wireless device, comprising: a processor; andmemory coupled with the processor, the processor configured to: receive,from a second wireless device, an indication of a communicationconfiguration for operating in a first mode, the communicationconfiguration indicating one or more configuration parameters for atleast one of a bandwidth part, a length of a synchronization signalblock, or a combination thereof, associated with the first mode; andcommunicate with the second wireless device in the first mode based atleast in part on the one or more configuration parameters, wherein afirst length of a first transmission time interval associated with thefirst mode is different from a second length of a second transmissiontime interval associated with a second mode.
 32. An apparatus forwireless communications at a first wireless device, comprising: aprocessor; and memory coupled with the processor, the processorconfigured to: communicate with a second wireless device according to acurrent mode; determine a communication configuration for the secondwireless device, the communication configuration comprising one or moreconfiguration parameters for at least one of a bandwidth part, a lengthof a synchronization signal block, or a combination thereof, associatedwith a first mode; and communicate with the second wireless deviceaccording to the first mode based at least in part on the one or moreconfiguration parameters, wherein a first length of a first transmissiontime interval associated with the first mode is different from a secondlength of a second transmission time interval associated with a secondmode.